EP3369639A1 - Railcar door apparatus and the railcar equipped therewith - Google Patents
Railcar door apparatus and the railcar equipped therewith Download PDFInfo
- Publication number
- EP3369639A1 EP3369639A1 EP18157103.5A EP18157103A EP3369639A1 EP 3369639 A1 EP3369639 A1 EP 3369639A1 EP 18157103 A EP18157103 A EP 18157103A EP 3369639 A1 EP3369639 A1 EP 3369639A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- operation member
- door
- operation position
- door body
- door apparatus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 158
- 230000002159 abnormal effect Effects 0.000 claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims description 85
- 230000033001 locomotion Effects 0.000 claims description 68
- 238000001514 detection method Methods 0.000 claims description 20
- 238000005259 measurement Methods 0.000 claims description 8
- 230000009467 reduction Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 description 48
- 230000008878 coupling Effects 0.000 description 13
- 238000010168 coupling process Methods 0.000 description 13
- 238000005859 coupling reaction Methods 0.000 description 13
- 238000012790 confirmation Methods 0.000 description 5
- 238000013459 approach Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005281 excited state Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D19/00—Door arrangements specially adapted for rail vehicles
- B61D19/02—Door arrangements specially adapted for rail vehicles for carriages
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B83/00—Vehicle locks specially adapted for particular types of wing or vehicle
- E05B83/36—Locks for passenger or like doors
- E05B83/363—Locks for passenger or like doors for railway vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D19/00—Door arrangements specially adapted for rail vehicles
- B61D19/02—Door arrangements specially adapted for rail vehicles for carriages
- B61D19/023—Emergency exits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
- B61L25/02—Indicating or recording positions or identities of vehicles or trains
- B61L25/021—Measuring and recording of train speed
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B81/00—Power-actuated vehicle locks
- E05B81/02—Power-actuated vehicle locks characterised by the type of actuators used
- E05B81/04—Electrical
- E05B81/08—Electrical using electromagnets or solenoids
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B81/00—Power-actuated vehicle locks
- E05B81/12—Power-actuated vehicle locks characterised by the function or purpose of the powered actuators
- E05B81/18—Power-actuated vehicle locks characterised by the function or purpose of the powered actuators to effect movement of a bolt or bolts
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B81/00—Power-actuated vehicle locks
- E05B81/24—Power-actuated vehicle locks characterised by constructional features of the actuator or the power transmission
- E05B81/32—Details of the actuator transmission
- E05B81/46—Clutches
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
- E05B2047/0014—Constructional features of actuators or power transmissions therefor
- E05B2047/0018—Details of actuator transmissions
- E05B2047/0026—Clutches, couplings or braking arrangements
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2201/00—Constructional elements; Accessories therefor
- E05Y2201/40—Motors; Magnets; Springs; Weights; Accessories therefor
- E05Y2201/43—Motors
- E05Y2201/434—Electromotors; Details thereof
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2201/00—Constructional elements; Accessories therefor
- E05Y2201/60—Suspension or transmission members; Accessories therefor
- E05Y2201/622—Suspension or transmission members elements
- E05Y2201/71—Toothed gearing
- E05Y2201/716—Pinions
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2201/00—Constructional elements; Accessories therefor
- E05Y2201/60—Suspension or transmission members; Accessories therefor
- E05Y2201/622—Suspension or transmission members elements
- E05Y2201/71—Toothed gearing
- E05Y2201/722—Racks
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2400/00—Electronic control; Electrical power; Power supply; Power or signal transmission; User interfaces
- E05Y2400/10—Electronic control
- E05Y2400/44—Sensors not directly associated with the wing movement
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2400/00—Electronic control; Electrical power; Power supply; Power or signal transmission; User interfaces
- E05Y2400/10—Electronic control
- E05Y2400/45—Control modes
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2900/00—Application of doors, windows, wings or fittings thereof
- E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
- E05Y2900/51—Application of doors, windows, wings or fittings thereof for vehicles for railway cars or mass transit vehicles
Definitions
- the present invention relates to a door apparatus for railcars and a railcar equipped with the door apparatus for a railcar.
- the invention also relates to a door unlocking device for unlocking a door body in an emergency and a method of unlocking a door body that is locked by a locking mechanism.
- a door apparatus for railcars includes a door body and a locking mechanism for locking the door body to maintain the door in a closed state.
- the door apparatus is designed such that the door body is locked by the locking mechanism while railcars travel to prevent the door from unexpectedly being opened for passengers' safety.
- a passenger when power is properly suppled to a railcar, a passenger can push a button or the like provided in the vicinity of the door body to send a request signal that requests unlocking of the door body to a member of a crew in a driver seat or the like. After it is determined by the crew member that the door body is allowed to be opened, the passenger mechanically unlocks the door body using a lever or the like provided in the vicinity of the door body.
- the reason why the passenger needs to obtain such a confirmation from the crew prior to unlocking the door body is that the passenger's safety should be ensured while the railcar is traveling when the power is normally supplied and it should be confirmed that the speed of the car before the unlocking be below a predetermined speed and any other conditions may be checked if needed
- the lever for unlocking the door body cannot be operated until the confirmation of the crew is obtained.
- the lever when the above-described lever is operated, not only the unlocking operation of the door is performed but also a request signal for unlocking the door may be transmitted
- the lever may be designed to be operated in two stages. When the power is properly supplied, the lever can be operated only up to the first stage until the confirmation by a crew is obtained
- the request signal for requesting unlocking of the door body is transmitted by operating the lever to the first stage by a passenger, and once the confirmation by the crew is obtained, the passenger is allowed to operate the lever to the second stage to unlock the door. Whereas when power is not properly supplied, the passenger immediately unlocks the door body by operating the lever to the second stage with one push.
- the unlocking operation of the door body be simple and the number of steps in the unlocking operation be small so as to be intuitively grasped by passengers.
- unlocking operation of the door body when the power is properly supplied is complicated as described above, and is different from the operation that can be intuitively grasped from the lever. More specifically, in order to unlock the door body, it is necessary to press the button before pulling the lever, or to operate the lever in the two stages.
- the present invention has been made in view of the above and one object of the invention is to provide a door apparatus with which it is possible to perform unlocking operation of a door body in a simple and intuitive manner in an emergency, and a railcar provided with the door apparatus. Another object of the invention is to provide a door unlocking device and a method of unlocking a door body with which it is possible to perform unlocking operation of a door body simply and intuitively in an emergency.
- a door apparatus is a door apparatus used for a railcar.
- the door apparatus includes: a door body that is openable and closable; a locking mechanism locking the door body in a closed state; and an operation member operated to unlock the door body.
- a power supply for the railcar is in a normal state, it is determined whether the door body is allowed to be opened by operating the operation member, and the door body is unlocked by the locking mechanism only when it is determined that opening of the door body is allowed, and when the power supply for the railcar is in an abnormal state, the door body is unlocked by the locking mechanism by operating the operation member.
- the door apparatus may further include a timer activated after the operation member is operated When a predetermined time has elapsed after the timer is activated, it may be determined that the door body is allowed to be opened
- the door apparatus may further include a motion detection sensor detecting a movement of the operation member and transmitting an electric signal; a transmission member transmitting the movement of the operation member to the locking mechanism; and a clutch mechanism engaging and disengaging transmission of the movement from the operation member to the transmission member.
- the clutch mechanism may disengage transmission of the movement from the operation member to the transmission member when electric power is supplied to the clutch mechanism, and may engage transmission of the movement from the operation member to the transmission member when electric power is not supplied to the clutch mechanism.
- the clutch mechanism may include a solenoid actuator.
- the solenoid actuator may include an actuator main body supported by one of the operation member or the transmission member, and a movable portion movable relative to the actuator main body.
- the movable portion may protrude out from the main body to engage the other of the operation member or the transmission member when the solenoid actuator is demagnetized
- the other of the operation member or the transmission member may have a receiving portion that receives the movable portion of the demagnetized solenoid actuator.
- the operation member is movable between a non-operation position where the operation member is situated when the operation member is not operated, and an operation position where the motion detection sensor transmit the electric signal and a second operation position where the door body is allowed to be unlocked by the locking mechanism.
- the door apparatus may further include a holding mechanism that inhibits the operation member from returning to the non-operation position from the operation position or the second operation position after the operation member has been moved to the operation position or the second operation position from the non-operation position.
- the holding mechanism may be a latch mechanism and may allow the operation member to move from the operation position and the second operation position so as to move further away from the non-operation position.
- the door apparatus may further include a casing that holds the operation member such that the operation member is movable from the non-operation position to a third operation position via the operation position and the second operation position.
- the casing may be deformed by contacting the operation member that moves from the second operation position to the third operation position.
- the casing may have, at a portion where is deformed by contacting the operation member that moves from the second operation position to the third operation position, a strength reduction feature for lowering the strength of the portion.
- the clutch mechanism may include a solenoid actuator.
- the solenoid actuator may include an actuator main body supported by one of the operation member or the transmission member, and a movable portion movable relative to the actuator main body.
- the movable portion may protrude out from the main body to engage the other of the operation member or the transmission member when the solenoid actuator is demagnetized, the other of the operation member or the transmission member may have a receiving portion that receives the movable portion of the demagnetized solenoid actuator when the operation member is situated at a non-operation position where the operation member is unoperated, and a second receiving portion that receives the demagnetized movable portion when the operation member is situated at a second operation position.
- a railcar according to another aspect of the invention includes the above-described door apparatus, and a car body equipped with the door apparatus.
- a railcar includes the above-described door apparatus, a car body equipped with the door apparatus, and a speed sensor measuring a speed of the car body.
- a measurement result of the speed sensor indicates that the car body is stopped or a detected speed of the car body is at or lower than a predetermined speed, it is determined that the door body is allowed to be opened
- a railcar includes a door apparatus equipped with the above-described timer; a car body equipped with the door apparatus; and a speed sensor measuring a speed of the car body.
- a measurement result of the speed sensor indicates that the car body is stopped or a detected speed of the car body is at or lower than a predetermined speed and when a predetermined time has elapsed after the timer is activated, it is determined that the door body is allowed to be opened
- a method of unlocking a door body is a method of unlocking a door body of a railcar that is locked by a locking mechanism in a closed state.
- the method includes operating an operation member to unlock the door body; and when a power supply for the railcar is in a normal state, determining whether the door body is allowed to be opened after the operation member is operated, and unlocking the door body by the locking mechanism only when it is determined that opening of the door body is allowed, when the power supply for the railcar is in an abnormal state, unlocking the door body by the locking mechanism after the operation member is operated without determining whether opening of the door body is allowed.
- the door body is allowed to be opened when a predetermined time has elapsed after the operation member is operated
- a door unlocking device is a door unlocking device for unlocking a door body of a railcar locked by a locking mechanism in a closed state.
- the door unlocking device includes: an operation member operated to unlock the door body; a motion detection sensor detecting a movement of the operation member and transmitting an electric signal; a transmission member transmitting the movement of the operation member to the locking mechanism; and a clutch mechanism engaging and disengaging transmission of the movement from the operation member to the transmission member.
- the clutch mechanism disengages transmission of the movement from the operation member to the transmission member when electric power is supplied to the clutch mechanism, and engages transmission of the movement from the operation member to the transmission member when electric power is not supplied to the clutch mechanism.
- the clutch mechanism may include a solenoid actuator.
- the solenoid actuator includes an actuator main body supported by one of the operation member or the transmission member, and a movable portion movable relative to the actuator main body.
- the movable portion may protrude out from the main body to engage the other of the operation member or the transmission member when the solenoid actuator is demagnetized
- the other of the operation member or the transmission member may have a receiving portion that receives the movable portion of the demagnetized solenoid actuator.
- the operation member is movable between a non-operation position where the operation member is situated when the operation member is not operated, and an operation position where the motion detection sensor transmit the electric signal and a second operation position where the door body is allowed to be unlocked by the locking mechanism
- the door unlocking device may further include a holding mechanism that inhibits the operation member from returning to the non-operation position from the operation position or the second operation position after the operation member has been moved to the operation position or the second operation position from the non-operation position.
- the holding mechanism may be a latch mechanism and allows the operation member to move from the operation position and the second operation position so as to move further away from the non-operation position.
- the door unlocking device may further include a casing that holds the operation member such that the operation member is movable from the non-operation position to a third operation position via the operation position and the second operation position.
- the casing may be deformed by contacting the operation member that moves from the second operation position to the third operation position.
- the casing may have, at a portion where is deformed by contacting the operation member that moves from the second operation position to the third operation position, a strength reduction feature for lowering the strength of the portion.
- the clutch mechanism includes a solenoid actuator
- the solenoid actuator includes an actuator main body supported by one of the operation member or the transmission member, and a movable portion movable relative to the actuator main body, and the movable portion protrudes out from the main body to engage the other of the operation member or the transmission member when the solenoid actuator is demagnetized
- the other of the operation member or the transmission member has a receiving portion that receives the movable portion of the demagnetized solenoid actuator when the operation member is situated at a non-operation position where the operation member is unoperated, and a second receiving portion that receives the demagnetized movable portion when the operation member is situated at a second operation position.
- a door apparatus includes the above-described door unlocking device.
- a railcar according to another aspect of the invention includes the above-described door unlocking device.
- an operator only has to perform one operation to unlock the door body. Therefore, it is possible to facilitate operator's intuitive grasping of the unlocking operation method of the door body.
- Fig.1 is a block diagram schematically showing an overall configuration of a railcar according to an embodiment of the invention.
- a railcar 10 includes a door apparatus 20, and a car body 25 to which the door apparatus 20 is installed Electric power is supplied to each part of the railcar 10 from a power supply 40 provided in the car body 25.
- the car body 25 is provided with a speed sensor 26 for measuring a speed of the car body 25.
- the door apparatus 20 includes a door body (door panel) 50 that can be opened and closed, a locking mechanism 60 that locks the door body 50 in a closed state, and a door unlocking device 200 for unlocking the door body 50 of the railcar 10 with the locking mechanism 60 in an emergency.
- the locking mechanism 60 has a movable member (locking slider) 30 capable of unlocking the door body 50 by sliding in a hereunder-described unlocking direction within the locking mechanism 60, and a motor 35 that drives the locking slider 30.
- One end of a wire 31 is connected to the locking slider 30.
- the door unlocking device 200 When electric power is properly supplied from the power supply 40 (hereinafter also referred to as “when the power supply works normally” or “in the normal power supply state”), the door unlocking device 200 is configured to drive the motor 35 of the locking mechanism 60 via a hereunder-described control unit 210 to slide the locking slider 30 in the unlocking direction. Whereas when electric power is not properly supplied from the power supply 40 (hereinafter also referred to as “when there is some failure in the power supply” or “in the abnormal power supply state), the door unlocking device 200 is configured to pull the wire 31 to slide the locking slider 30 in the unlocking direction.
- the door apparatus 20 further includes the control unit 210 that controls unlocking of the door body 50 when electric power is properly supplied from the power supply 40.
- Fig. 2 is a front view of the door unlocking device 200 when it is not operated
- Fig. 3 is a sectional view of the door unlocking device 200 along the line III- III shown in Fig 2
- Fig. 4 is a perspective view of the door unlocking device 200 when it is operated
- Fig. 5 is a cross-sectional view of the door unlocking device along the line V-V shown in Fig. 3 .
- the door unlocking device 200 includes an operation member 230 that is operated to unlock the door body 50 in an emergency, a casing 236 that holds the operation member 230 such that the operation member 230 is rotatable. Further, the door unlocking device 200 has a motion detection sensor 260 that detects a movement of the operation member 230, and a holding mechanism 235 that restricts movement of the operated operation member 230. Referring to Fig. 4 , the door unlocking device 200 includes a transmission member 270 that transmits a movement of the operation member 230 to the locking mechanism 60, and a clutch mechanism 280 that engages and disengages transmission of the movement from the operation member 230 to the transmission member 270.
- the operation member 230 is generally a platelike member.
- a bearing 232 is provided on an end portion of one surface of the operation member 230.
- the casing 236 has a support portion 237 rotatably supporting a shaft 233 that passes through the bearing 232 of the operation member 230.
- the casing 236 holds the operation member 230 such that the operation member is movable from a non-operation position A situated when the operation member is not operated, to a third operation position D via an operation position B and a second operation position C.
- a portion 238 of the casing 236 is designed such that it comes into contact with the operation member 230 when the operation member 230 is moved to the second operation position C.
- the portion 238 is also designed to deform such that it allows the operation member 230 to be further moved to the third operation position D if necessary. That is, while the operation member 230 moves from the second operation position C to the third operation position D, the portion 238 is deformed by contacting the operation member 236. More specifically, the portion 238 of the casing 236 has a notch 239 as a strength reduction feature for reducing the strength of the portion 238 where is deformed when it contacts the operation member 236. Other configurations for the strength reduction may be possible such as thinning and formation of a through hole.
- the motion detection sensor 260 When the operation member 230 is moved to the operation position B, the motion detection sensor 260 is configured to transmit an electric signal.
- the motion detection sensor 260 may include a magnetic sensor, for example, and can detect approach of the operation member 230.
- the holding mechanism 235 inhibits the operation member 230 from returning to the non-operation position A from the operation position B or the second operation position C.
- the holding mechanism 235 is a latch mechanism and allows the operation member 230 to move from the operation position B and the second operation position C so as to move further away from the non-operation position A. With such a holding mechanism 235, it is prevented that the operation member 230 that has been moved to the operation position B or the second operation position C returns to the non-operation position A, and if necessary, the operation member 230 can be further moved from the operation position B to the second operation position C or from the second operation position C to the third operation position D.
- the clutch mechanism 280 is configured to disengage transmission of the movement from the operation member 230 to the transmission member 270 when electric power is properly supplied from the power supply 40. Whereas when electric power is not properly supplied from the power supply 40, the clutch mechanism 280 is configured to engage transmission of the movement from the operation member 230 to the transmission member 270.
- the clutch mechanism 280 includes a solenoid actuator 281 that receives electric power from the power supply 40 and generates a magnetic field therearound
- the solenoid actuator 281 includes an actuator main body 282 supported by the transmission member 270 and a movable portion 283 movable relative to the actuator main body 282. In a state where the solenoid actuator 281 is excited, the movable portion 283 is accommodated in the main body 282, for example, when electric power is normally supplied from the power supply 40.
- the movable portion 283 protrudes out from the main body 282 to engage with the operation member 230.
- the operation member 230 has a receiving portion 283a that receives the protruded movable portion 283 of the demagnetized solenoid actuator 281.
- the receiving portion 283a is provided at a position where it can receive the protruded movable portion 283 when the operation member 230 is situated at the non-operation position A.
- the operation member 230 is further provided with a second receiving portion 283b that receives the protruded movable portion 283 so that the operation member 230 can engage with the movable portion 283 even when the operation member 230 is moved to the second operation position C. More specifically, the second receiving portion 283b is provided at a position where it can receive the protruded movable portion 283 when the operation member 230 is situated at the second operation position C.
- the operation position B and the second operation position C are situated at different positions, but they may be at the same position. That is, the operation position of the operation member 230 where the motion detection sensor 260 sends an electric signal (the operation position B in the example shown in Fig. 3 ) and the operation position where the movable portion 283 of the clutch mechanism 280 is able to engage with the second receiving portion 283b (the second operation position C in the example shown in Fig. 3 ) may correspond with each other.
- the actuator main body 282 may be supported by the operation member 230.
- the receiving portion 283a and the second receiving portion 283b are provided in the transmission member 270, and the movable portion 283 protruding out from the main body 282 is engaged with the transmission member 270.
- the transmission member 270 includes a pinion 271 and a rack 273.
- the pinion 271 rotates in conjunction with rotation of the operation member 230.
- the rack 273 is configured to move in the vertical direction in accordance with rotation of the pinion 271.
- a tip portion of the rack 273 is coupled to the other end of the wire 31 that is coupled to the locking slider 30 of the locking mechanism 60. In this manner, the movement of the rack 273 is transmitted to the locking slider 30 of the locking mechanism 60 via the wire 31.
- control unit 210 includes a determination unit 212 that determines whether the door body 50 is allowed to be opened, a switch (SW) unit 213 that electrically connects or disconnects the motor 35 of the locking mechanism 60 to/from the power supply 40.
- SW switch
- the determination unit 212 determines whether the door body 50 is allowed to be opened As shown in Fig. 1 , the determination unit 212 has a timer 215. The timer 215 is activated upon receiving an electric signal sent from the motion detection sensor 260.
- the determination unit 212 determines that the door body 50 is allowed to be opened only when following first condition and second condition are satisfied
- the first condition is that a measurement result of the above-described speed sensor 26 shows that the car body 25 is stopped or a detected speed of the car body 25 is at or lower than a predetermined speed
- the second condition is that a predetermined time has elapsed since the timer 215 was activated
- the determination unit 212 may determine that opening of the door body 50 is allowed when either one of the first condition and the second condition is satisfied
- a member of a crew may determine whether opening of the door body 50 is allowed or not based on the speed sensor 26, the timer 215, and other instruments.
- the switch unit 213 is switched so as to supply electric power from the power supply 40 to the motor 35 only when the determination unit 212 determines that opening of the door body 50 is allowed
- the switch unit 213 may be operated to be switched by a member of a crew at his/her discretion.
- Fig. 6 is a plan view of the locking mechanism 60 in an unlocked state
- Fig. 7 is a plan view of the locking mechanism 60 in a locked state
- Fig. 8 is a side view of the locking mechanism 60 in the locked state.
- the door body 50 includes a pair of right and left door panels 50A and 50B of a sliding type.
- the locking mechanism 60 is supported by a base 5 that is fixed to the car body 25 above the door body 50.
- the base 5 extends along the opening and closing direction of the door body 50.
- the locking mechanism 60 includes a link mechanism 61 that is deformable between a linear state and a flexion state in a horizontal plane, and a link retaining mechanism 65 that operates within the horizontal plane.
- the link mechanism 61 is formed by coupling three links 62a, 62b, and 62c. At a central portion in its longitudinal direction, the central link 62a is rotatably fixed to the base 5 by a coupling pin 63a.
- One end of the central link 62a is coupled to one end of the link 62b by a coupling pin 63b.
- the other end of the central link 62a is coupled to one end of the link 62c by a guide coupling pin 63c.
- a pin 63d and a pin 63e are provided at ends of the links 62b, 62c respectively on the side opposite the points of coupling between the links 62b, 62c and the link 62a.
- the locking mechanism 60 has the locking slider 30 which is a movable member for switching the locking mechanism 60 between the locked state and the unlocked state.
- the locking slider 30 is supported by the base 5 and slidable along the opening and closing direction of the door body 50.
- the locking slider 30 is configured to slide when it receives a driving force exerted by the motor 35.
- one end of the wire 31 is connected to one end of the locking slider 30, and the locking slider is able to slide also by a pulling force exerted by the wire 31.
- the pins 63d and 63e situated at the ends of the link mechanism 61, have ends thereof respectively inserted in guide grooves 80A and 80B (indicated by alternate long and two short dashes lines in Figs. 6 and 7 ) that are formed linearly in the base 5 in parallel to the sliding direction of the locking slider 30.
- the pins 63d and 63e are installed so as to be movable along the guide grooves 80A and 80B. In other words, the movements of the pins 63d and 63e are respectively restricted by the guide grooves 80A and 80B.
- the slit 30e has a first hole ⁇ that is formed lineally in parallel to the moving direction of the locking slider 30, and a second hole ⁇ that has a curved shape and is connected to the end portion of the first hole ⁇ on the side closer to the guide groove 80B.
- the first hole ⁇ is aligned with the guide grooves 80A, 80B in the moving direction of the locking slider 30.
- an end of the second hole ⁇ on the side opposite to the side connected to the first hole ⁇ is not aligned with the first hole ⁇ and the guide grooves 80A, 80B in the moving direction of the locking slider 30.
- the guide connecting pin 63c is configured such that it can be displaced from the first hole ⁇ to the second hole ⁇ or from the second hole ⁇ to the first hole ⁇ according to the position of the locking slider 30.
- the position of the guide coupling pin 63c is thus restricted by the position of the locking slider 30. Therefore the central link 62a is rotated by the movement of the locking slider 30 and it is possible to switch between the linear state and the flexion state of the link mechanism 61.
- the link retaining mechanism 65 includes a pair of engaging members 66A and 66B that are provided near the respective ends of the link mechanism 61 symmetrically with reference to the link mechanism 61 (with reference to the coupling pin 63a) such that they are rotatable within the horizontal plane.
- the link retaining mechanism 65 further includes a coupling spring 69 that couples the pair of engaging members to each other.
- the engaging members 66A and 66B respectively have, at peripheral portions thereof, first engaging portions 67A and 67B and second engaging portions 68A and 68B that are formed in concave shapes.
- Rotation shafts 81A and 81B of the engaging members 66A and 66B are fixedly provided on the base 5 (see Fig. 8 ).
- a bridge member 82 is fixed to the pair of rotation shafts 81A and 81B, and the coupling pin 63a for rotatably fixing the central link 62a of the link mechanism 61 is supported by the bridge member 82.
- the engaging members 66A and 66B When no external force exerts on the link retaining mechanism 65, the engaging members 66A and 66B receive a force from the coupling spring 69 and are retained in the state as shown in Fig. 6 . In this state, the engaging members 66A and 66B constrain, by their peripheral portions (portions indicated by the arrows P2 in Fig. 6 ), an extending movement of the link mechanism 61 into the linear state.
- the link mechanism 61 is thus held in the flexion state by the engaging members 66A and 66B, the locking slider 33 is prevented from moving in the locking direction (the direction indicated by the arrow in Fig. 6 ) via the slit 33e and the guide coupling pin 63c.
- the locking pins 55A, 55B and the first engaging portions 67A, 67B are engaged with each other as shown in Fig. 7 , and the second engaging portions 68A and 68B are situated at the positions where they can engage with the pins 63d and 63e disposed at the ends of the link mechanism 61. That is, the engaging members 66A and 66B are in a state where they do not constrain the deformation of the link mechanism 61. If at this point, the locking slider 30 moves in the locking direction, the link mechanism 61 is made to transition from the flexion state to the linear state by the guide connecting pin 63c that moves along the slit 33e.
- the pins 63d and 63e that are situated at the ends of the link mechanism 61 then engage with the second engaging potions 68A and 68B of the engaging members 66A and 66B respectively. Turning of the engaging members 66A and 66B are thereby constrained Movements of the locking pins 55A and 55B in opening directions (directions indicated by the arrows in Fig. 7 ) are thus constrained by the first engaging portions 67A and 67B.
- the door body 50 When an operator tries to open the door body 50, the door body 50 is closed and locked by the locking mechanism 60. That is, the link mechanism 61 in the locking mechanism 60 is in the linear state shown in Fig. 7 . Further, the operation member 230 of the door unlocking device 200 is in the non-operation position A shown in Figs. 2 and 3 .
- the switch unit 213 is switched to the position where electric power is not supplied to the motor 35 of the locking mechanism 60 from the power supply 40.
- the operator moves the operation member 230 of the door unlocking device 200 from the non-operation position A to the operation position B.
- the movement of the operation member 230 is detected by the motion detection sensor 260.
- an electric signal is transmitted by the motion detection sensor 260.
- the operation member 230 that has been moved to the operation position B is held by the holding mechanism 235 of the door unlocking device 200. Consequently the operation member 230 is retained at the operation position B without returning to the non-operation position A.
- the determination unit 212 When the determination unit 212 receives the electric signal from the motion detection sensor 260, the determination unit 212 activates the timer 215 and determines whether opening of the door body 50 is allowed. More specifically, the determination unit 212 determines if a measurement result of the above-described speed sensor 26 shows that the car body 25 is stopped or a detected speed of the car body 25 is at or lower than a predetermined speed (the first condition). Further, the determination unit 212 determines if a predetermined time has elapsed after the operation member 230 is operated, that is, determines if a predetermined time has elapsed since the timer 215 was activated (the second condition).
- the determination unit 212 determines that the door body 50 is allowed to be opened after confirming that the first condition and the second condition are satisfied Note that the car body 25 can be moved to a place suitable for a crew to get off the car after the timer 215 is activated and before the predetermined time elapses.
- the switch unit 213 is switched such that electric power is supplied from the power supply 40 to the motor 35 of the locking mechanism 60.
- the locking slider 30 receives the driving force of the motor 35 and slides in the unlocking direction.
- the determination as to whether opening of the door body 50 is allowed may be made by a member of a crew based on information obtained from the speed sensor 26, the timer 215 and other instruments as described above.
- the operation of releasing the locking mechanism 60, such as switching of the switch unit 213 may also be carried out manually by a member of a crew.
- the guide connecting pin 63c of the link mechanism moves along the edge of the slit 30e from the first hole ⁇ to the second hole ⁇ .
- the link mechanism 61 is made a transition from the linear state to the flexion state.
- the solenoid actuator 281 of the clutch mechanism 280 shifts from the excited state to the demagnetized state. Therefore the movable portion 283 accommodated in the main body moves relative to the main body 282 and protrudes out from the main body 282.
- the operation member 230 is moved to the second operation position C (if the operation member 230 has been moved to the second operation position C, at the second operation position C)
- the movable portion 283 that protrudes out from the main body 282 is received by the second receiving portion 283b of the operation member 230, and engaged with the operation member 230.
- the door apparatus 20 includes the door body 50 that can be opened and closed, the locking mechanism 60 for locking the door body 50 in a closed state, and the operation member 230 that is operated to unlock the door body 50.
- the door body 50 When the power supply 40 of the railcar 10 is normal, it is determined whether the door body 50 is allowed to be opened by operating the operation member 230.
- the door body 50 is unlocked by the locking mechanism 60 only when it is determined that opening of the door body 50 is allowed Whereas when the power supply 40 of the railcar 10 is in an abnormal state, the door body 50 is unlocked by the locking mechanism 60 by operating the operation member 230.
- an operator has to perform only one movement to unlock the door body 50 in an emergency. Therefore, it is possible to facilitate operator's intuitive grasping of the unlocking operation method of the door body 50. Further, the operation object and the operation method are the same between the normal power supply state and the abnormal power supply state. Therefore, it is possible to prompt an operator to try one operation method that is intuitively grasped from the operation member 230 to unlock the door body 50.
- the door apparatus 20 further includes the timer 215 that is activated after the operation member 230 is operated When a predetermined time has elapsed after the timer 215 is activated, it is determined that the door body 50 is allowed to be opened According to the door apparatus 20, after the operation member 230 is operated and before the door body 50 is unlocked by the locking mechanism 60, the speed of the car body 25 can be sufficiently reduced or the car body 25 can be moved to a place suitable for letting passengers and a crew get off. Therefore, it is possible to secure the safety of the crew of the railcar 10.
- the door apparatus 20 further includes a motion detection sensor 260 detecting a movement of the operation member 230 and transmitting an electric signal; a transmission member 270 transmitting the movement of the operation member 230 to the locking mechanism 60; and a clutch mechanism 280 engaging and disengaging transmission of the movement from the operation member 230 to the transmission member 270.
- a motion detection sensor 260 detecting a movement of the operation member 230 and transmitting an electric signal
- a transmission member 270 transmitting the movement of the operation member 230 to the locking mechanism 60
- a clutch mechanism 280 engaging and disengaging transmission of the movement from the operation member 230 to the transmission member 270.
- the clutch mechanism 280 disengages transmission of the movement from the operation member 230 to the transmission member 270 when electric power is supplied to the clutch 280, and engages transmission of the movement from the operation member 230 to the transmission member 270 when electric power is not supplied to the clutch 280.
- this door apparatus 20 it is easy to make the operation object and the operation method same between the normal power supply state and the abnormal power supply state. Therefore, it is possible to prompt an operator to try one operation method that is intuitively grasped from the operation member 230 to unlock the door body 50.
- the clutch mechanism 280 includes the solenoid actuator 281.
- the solenoid actuator 281 includes the actuator main body 282 supported by one of the operation member 230 or the transmission member 270, and the movable portion 283 movable relative to the actuator main body 282.
- the movable portion 283 protrudes out from the main body 282 to engage the other of the operation member 230 or the transmission member 270 when the solenoid actuator 281 is demagnetized
- the other of the operation member 230 or the transmission member 270 has the receiving portion 283a that receives the movable portion 283 of the demagnetized solenoid actuator 281.
- the operation member 230 is movable between the non-operation position A where the operation member 230 is situated when the operation member 230 is not operated, and the operation position B where the motion detection sensor 260 transmits the electric signal and the second operation position C where the door body 50 is allowed to be unlocked by the locking mechanism 60.
- the door apparatus 20 further includes the holding mechanism 235 that inhibits the operation member 230 from returning to the non-operation position A from the operation position B or the second operation position C after the operation member 230 has been moved to the operation position B or the second operation position C from the non-operation position A.
- this door apparatus 20 it is possible to prevent the operation member 230 from returning to the non-operation position A after the operation member 230 has been moved to the operation position B so that insufficient transmission of the electric signal by the motion detection sensor 260 is prevented Moreover, it is possible to prevent the operation member 230 from returning to the non-operation position A after the operation member 230 has been moved to the second operation position C so that it is possible to prevent that the door body 50 is unintentionally locked again.
- the holding mechanism 235 is a latch mechanism and allows the operation member 230 to move from the operation position B and the second operation position C so as to move further away from the non-operating position A. According to this door apparatus 20, it is possible to further move the operation member 230 that is situated at the operation position B or the second operation position C to move away from the non-operation position A. In this way, it is possible to secure an operation amount of the operation member 230 necessary for unlocking the door body 50 by the locking mechanism 60 in preparation for occurrence of a failure of the power supply during operation of the operation member 230.
- the door apparatus 20 may further include the casing 236 that holds the operation member 230 such that the operation member 230 is movable from the non-operation position A to the third operation position D via the operation position B and the second operation position C.
- the casing 236 is deformed by contacting the operation member 230 that moves from the second operation position C to the third operation position D. According to this door apparatus 20, an operator is able to intuitively grasp even in an emergency that he/she should move the operation member 230 from the non-operation position A to the operation position B, and moreover it is possible for the operator to stably operate the operation member 230 from the non-operation position A to the operation position B.
- the casing 236 has, at a portion 238 where is deformed by contacting the operation member 230 that moves from the second operation position C to the third operation position D, the strength reduction feature 239 for lowering the strength of the portion 238.
- the clutch mechanism 280 includes the solenoid actuator 281.
- the solenoid actuator 281 includes the actuator main body 282 supported by one of the operation member 230 or the transmission member 270, and the movable portion 283 movable relative to the actuator main body 282.
- the movable portion 283 protrudes out from the main body 282 to engage the other of the operation member 230 or the transmission member 270 when the solenoid actuator 281 is demagnetized.
- the other of the operation member 230 or the transmission member 270 has a receiving portion 283a that receives the movable portion 283 of the demagnetized solenoid actuator 281 when the operation member 230 is situated at a non-operation position A where the operation member 230 is unoperated, and the second receiving portion 283b that receives the movable portion 283 of the demagnetized solenoid actuator 281 when the operation member 230 is situated at the second operation position C.
- this door apparatus 20 it is easy to make the operation object and the operation method same between the normal power supply state and the abnormal power supply state. Due to the presence of the receiving portions 283a and 283b, even when any failure occurs in the power supply after operation of the operating member 230 is started, the movable portion 283 of the clutch mechanism 280 is engaged with the operation member 230 or the transmission member 270 to allow the door body 50 to be unlocked by the locking mechanism 60.
- the railcar 10 includes the above-described door apparatus 20, and the car body 25 equipped with the door apparatus 20.
- an operator only has to perform one movement to unlock the door body 50 in an emergency. Therefore, it is possible to facilitate operator's intuitive grasping of the unlocking operation method of the door body 50. Further, the operation object and the operation method are the same between the normal power supply state and the abnormal power supply state. Therefore, it is possible to prompt an operator to try one operation method that is intuitively grasped from the operation member 230 to unlock the door body 50.
- the railcar 10 includes the above-described door apparatus 20, the car body 25 equipped with the door apparatus 20, and the speed sensor 26 that measures the speed of the car body 25.
- a measurement result of the speed sensor 26 indicates that the car body 25 is stopped or a detected speed of the car body 25 is at or lower than a predetermined speed, it is determined that the door body 50 is allowed to be opened
- the door body 50 is unlocked after the car body 25 is stopped or after the speed of the car body 25 is sufficiently reduced Therefore, it is possible to secure the safety of the crew of the railcar 10.
- the railcar 10 includes the above-described door apparatus 20 equipped with the timer 215, the car body 25 equipped with the door apparatus 20, and the speed sensor 26 that measures the speed of the car body 25.
- a measurement result of the speed sensor 26 indicates that the car body 25 is stopped or a detected speed of the car body 25 is at or lower than a predetermined speed and when a predetermined time has elapsed after the timer 215 is activated, it is determined that the door body 50 is allowed to be opened
- the door body 50 is unlocked after the car body 25 is stopped or after the speed of the car body 25 is sufficiently reduced Further, after the operation member 230 is operated and before the door body 50 is unlocked by the locking mechanism 60, it is possible to move the car body 25 to a place suitable for letting people getting off from the car. Therefore, it is possible to secure the safety of the crew of the railcar 10.
- a method of unlocking the door body 50 of the railcar 10 locked by the locking mechanism in a closed state includes: operating the operation member 230 to unlock the door body 50; and when the power supply for the railcar 10 is in a normal state, determining whether the door body 50 is allowed to be opened after the operation member 230 is operated, and unlocking the door body 50 by the locking mechanism 60 only when it is determined that opening of the door body 50 is allowed and when the power supply 40 for the railcar 10 is in an abnormal state, unlocking the door body 50 by the locking mechanism 60 after the operation member 230 is operated without determining whether opening of the door body 50 is allowed
- this unlocking method an operator only has to perform one operation to unlock the door body 50 in an emergency. Therefore, it is possible to facilitate operator's intuitive grasping of the unlocking operation method of the door body 50. Further, the operation object and the operation method are the same between the normal power supply state and the abnormal power supply state. Therefore, it is possible to prompt an operator to try one operation method that is intuitively grasped from the operation member 230 to unlock the door body 50.
- the door body 50 is allowed to be opened when a predetermined time has elapsed after the operation member 230 is operated According to this unlocking method after the operation member 230 is operated and before the door body 50 is unlocked by the locking mechanism 60, the speed of the car body 25 can be sufficiently reduced or the car body 25 can be moved to a place suitable for letting passengers and a crew get off. Therefore, it is possible to secure the safety of the crew of the railcar 10.
- the door body 50 is unlocked after the car body 25 is stopped or after the speed of the car body 25 is sufficiently reduced Therefore, it is possible to secure the safety of the crew of the railcar 10.
- the door body 50 is unlocked after the car body 25 is stopped or after the speed of the car body 25 is sufficiently reduced. Further, after the operation member 230 is operated and before the door body 50 is unlocked by the locking mechanism 60, it is possible to move the car body 25 to a place suitable for letting people getting off from the car. Therefore, it is possible to secure the safety of the crew of the railcar 10.
- the door unlocking device 200 includes the operation member 230 operated to unlock the door body 50, the motion detection sensor 260 that detects a movement of the operation member 230 and transmits an electric signal, the transmission member 270 that transmits the movement of the operation member 230 to the locking mechanism 60, and the clutch mechanism 280 that engages and disengages transmission of the movement from the operation member 230 to the transmission member 270.
- an operator has to perform only one movement to unlock the door body 50 in an emergency. Therefore, it is possible to facilitate operator's intuitive grasping of the unlocking operation method of the door body 50. Further, it is possible to make the operation object and the operation method same between the normal power supply state and the abnormal power supply state. Therefore, it is possible to prompt an operator to try one operation method that is intuitively grasped from the operation member 230 to unlock the door body 50.
- the clutch mechanism 280 disengages transmission of the movement from the operation member 230 to the transmission member 270 when electric power is supplied to the clutch, and engages transmission of the movement from the operation member 230 to the transmission member 270 when electric power is not supplied to the clutch.
- this door unlocking device 200 it is easy to make the operation object and the operation method same between the normal power supply state and the abnormal power supply state. Therefore, it is possible to prompt an operator to try one operation method that is intuitively grasped from the operation member 230 to unlock the door body 50.
- the clutch mechanism 280 includes the solenoid actuator 281.
- the solenoid actuator 281 includes the actuator main body 282 supported by one of the operation member 230 or the transmission member 270, and the movable portion 283 movable relative to the actuator main body 282.
- the movable portion 283 protrudes out from the main body 282 to engage the other of the operation member 230 or the transmission member 270 when the solenoid actuator 281 is demagnetized
- the other of the operation member 230 or the transmission member 270 has the receiving portion 283a that receives the movable portion 283 of the demagnetized solenoid actuator 281.
- the operation member 230 is movable between the non-operation position A where the operation member 230 is situated when the operation member 230 is not operated, and the operation position B where the motion detection sensor 260 transmit the electric signal and the second operation position C where the door body 50 is allowed to be unlocked by the locking mechanism 60.
- the door unlocking device 200 further includes the holding mechanism 235 that inhibits the operation member 230 from returning to the non-operation position A from the operation position B or the second operation position C after the operation member 230 has been moved to the operation position B or the second operation position C from the non-operation position A.
- this door unlocking device 200 it is possible to prevent the operation member 230 from returning to the non-operation position A after the operation member 230 has been moved to the operation position B so that insufficient transmission of the electric signal by the motion detection sensor 260 is prevented Moreover, it is possible to prevent the operation member 230 from returning to the non-operation position A after the operation member 230 has been moved to the second operation position C so that it is possible to prevent that the door body 50 is unintentionally locked again.
- the holding mechanism 235 is a latch mechanism and allows the operation member 230 to move from the operation position B and the second operation position C so as to move further away from the non-operating position A.
- this door unlocking device 200 it is possible to further move the operation member 230 that is situated at the operation position B or the second operation position C to move away from the non-operation position A. In this way, it is possible to secure an operation amount of the operation member 230 necessary for unlocking the door body 50 by the locking mechanism 60 in preparation for occurrence of a failure of the power supply during operation of the operation member 230.
- the door unlocking device 200 may further include the casing 236 that holds the operation member 230 such that the operation member 230 is movable from the non-operation position A to the third operation position D via the operation position B and the second operation position C.
- the casing 236 is deformed by contacting the operation member 230 that moves from the second operation position C to the third operation position D. According to this door unlocking device 200, an operator is able to intuitively grasp even in an emergency that he/she should move the operation member 230 from the non-operation position A to the operation position B, and moreover it is possible for the operator to stably operate the operation member 230 from the non-operation position A to the operation position B.
- the casing 236 has, at a portion 238 where is deformed by contacting the operation member 230 that moves from the second operation position C to the third operation position D, the strength reduction feature 239 for lowering the strength of the portion 238.
- the clutch mechanism 280 includes the solenoid actuator 281.
- the solenoid actuator 281 includes the actuator main body 282 supported by one of the operation member 230 or the transmission member 270, and the movable portion 283 movable relative to the actuator main body 282.
- the movable portion 283 protrudes out from the main body 282 to engage the other of the operation member 230 or the transmission member 270 when the solenoid actuator 281 is demagnetized.
- the other of the operation member 230 or the transmission member 270 has a receiving portion 283a that receives the movable portion 283 of the demagnetized solenoid actuator 281 when the operation member 230 is situated at a non-operation position A where the operation member 230 is unoperated, and the second receiving portion 283b that receives the movable portion 283 of the demagnetized solenoid actuator 281 when the operation member 230 is situated at the second operation position C.
- this door unlocking device 200 it is easy to make the operation object and the operation method same between the normal power supply state and the abnormal power supply state. Due to the presence of the receiving portions 283a and 283b, even when any failure occurs in the power supply after operation of the operating member 230 is started, the movable portion 283 of the clutch mechanism 280 is engaged with the operation member 230 or the transmission member 270 to allow the door body 50 to be unlocked by the locking mechanism 60.
- the door apparatus 20 includes the above-described door unlocking device 200. According to this door apparatus 20, an operator has to perform only one movement to unlock the door body 50 in an emergency. Therefore, it is possible to facilitate operator's intuitive grasping of the unlocking operation method of the door body 50. Further, it is possible to make the operation object and the operation method same between the normal power supply state and the abnormal power supply state. Therefore, it is possible to prompt an operator to try one operation method that is intuitively grasped from the operation member 230 to unlock the door body 50.
- the railcar 10 include the above-described door unlocking device 200.
- this door apparatus 20 an operator has to perform only one movement to unlock the door body 50 in an emergency. Therefore, it is possible to facilitate operator's intuitive grasping of the unlocking operation method of the door body 50. Further, it is possible to make the operation object and the operation method same between the normal power supply state and the abnormal power supply state. Therefore, it is possible to prompt an operator to try one operation method that is intuitively grasped from the operation member 230 to unlock the door body 50.
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Abstract
Description
- The present invention relates to a door apparatus for railcars and a railcar equipped with the door apparatus for a railcar. The invention also relates to a door unlocking device for unlocking a door body in an emergency and a method of unlocking a door body that is locked by a locking mechanism.
- A door apparatus for railcars includes a door body and a locking mechanism for locking the door body to maintain the door in a closed state. The door apparatus is designed such that the door body is locked by the locking mechanism while railcars travel to prevent the door from unexpectedly being opened for passengers' safety. As a method of opening such a locked door body by a passenger in an emergency, the following procedures are known.
- First, when power is properly suppled to a railcar, a passenger can push a button or the like provided in the vicinity of the door body to send a request signal that requests unlocking of the door body to a member of a crew in a driver seat or the like. After it is determined by the crew member that the door body is allowed to be opened, the passenger mechanically unlocks the door body using a lever or the like provided in the vicinity of the door body. The reason why the passenger needs to obtain such a confirmation from the crew prior to unlocking the door body is that the passenger's safety should be ensured while the railcar is traveling when the power is normally supplied and it should be confirmed that the speed of the car before the unlocking be below a predetermined speed and any other conditions may be checked if needed In this example, the lever for unlocking the door body cannot be operated until the confirmation of the crew is obtained.
- Whereas when power for opening the door body is not properly supplied, the railcar is generally stopped Therefore, it is not necessary to perform the confirmation, and the passenger can unlock the door body simply by operating the lever.
- Alternatively, when the above-described lever is operated, not only the unlocking operation of the door is performed but also a request signal for unlocking the door may be transmitted In this case, the lever may be designed to be operated in two stages. When the power is properly supplied, the lever can be operated only up to the first stage until the confirmation by a crew is obtained When power is properly supplied, the request signal for requesting unlocking of the door body is transmitted by operating the lever to the first stage by a passenger, and once the confirmation by the crew is obtained, the passenger is allowed to operate the lever to the second stage to unlock the door. Whereas when power is not properly supplied, the passenger immediately unlocks the door body by operating the lever to the second stage with one push.
- Here, it is a passenger to perform the unlocking operation of the door body as described above, and it is an emergency that such an unlocking operation is performed Therefore, it is desirable that the unlocking operation of the door body be simple and the number of steps in the unlocking operation be small so as to be intuitively grasped by passengers.
- However, the unlocking operation of the door body when the power is properly supplied is complicated as described above, and is different from the operation that can be intuitively grasped from the lever. More specifically, in order to unlock the door body, it is necessary to press the button before pulling the lever, or to operate the lever in the two stages.
- In addition, if an object to be operated or an operation method is different between when the power is properly supplied and when the power is not properly supplied, a passenger has to try two or more operation methods in order to unlock the door body, which hinders prompt unlocking in an emergency.
- The present invention has been made in view of the above and one object of the invention is to provide a door apparatus with which it is possible to perform unlocking operation of a door body in a simple and intuitive manner in an emergency, and a railcar provided with the door apparatus. Another object of the invention is to provide a door unlocking device and a method of unlocking a door body with which it is possible to perform unlocking operation of a door body simply and intuitively in an emergency.
- A door apparatus according to one aspect of the invention is a door apparatus used for a railcar. The door apparatus includes: a door body that is openable and closable; a locking mechanism locking the door body in a closed state; and an operation member operated to unlock the door body. When a power supply for the railcar is in a normal state, it is determined whether the door body is allowed to be opened by operating the operation member, and the door body is unlocked by the locking mechanism only when it is determined that opening of the door body is allowed, and when the power supply for the railcar is in an abnormal state, the door body is unlocked by the locking mechanism by operating the operation member.
- The door apparatus may further include a timer activated after the operation member is operated When a predetermined time has elapsed after the timer is activated, it may be determined that the door body is allowed to be opened
- The door apparatus may further include a motion detection sensor detecting a movement of the operation member and transmitting an electric signal; a transmission member transmitting the movement of the operation member to the locking mechanism; and a clutch mechanism engaging and disengaging transmission of the movement from the operation member to the transmission member.
- In the door apparatus, the clutch mechanism may disengage transmission of the movement from the operation member to the transmission member when electric power is supplied to the clutch mechanism, and may engage transmission of the movement from the operation member to the transmission member when electric power is not supplied to the clutch mechanism.
- In the door apparatus, the clutch mechanism may include a solenoid actuator.
- In the door apparatus, the solenoid actuator may include an actuator main body supported by one of the operation member or the transmission member, and a movable portion movable relative to the actuator main body. The movable portion may protrude out from the main body to engage the other of the operation member or the transmission member when the solenoid actuator is demagnetized
- In the door apparatus, the other of the operation member or the transmission member may have a receiving portion that receives the movable portion of the demagnetized solenoid actuator.
- In the door apparatus, the operation member is movable between a non-operation position where the operation member is situated when the operation member is not operated, and an operation position where the motion detection sensor transmit the electric signal and a second operation position where the door body is allowed to be unlocked by the locking mechanism. The door apparatus may further include a holding mechanism that inhibits the operation member from returning to the non-operation position from the operation position or the second operation position after the operation member has been moved to the operation position or the second operation position from the non-operation position.
- In the door apparatus, the holding mechanism may be a latch mechanism and may allow the operation member to move from the operation position and the second operation position so as to move further away from the non-operation position.
- Moreover, the door apparatus may further include a casing that holds the operation member such that the operation member is movable from the non-operation position to a third operation position via the operation position and the second operation position. The casing may be deformed by contacting the operation member that moves from the second operation position to the third operation position.
- In the door apparatus, the casing may have, at a portion where is deformed by contacting the operation member that moves from the second operation position to the third operation position, a strength reduction feature for lowering the strength of the portion.
- In the door apparatus, the clutch mechanism may include a solenoid actuator. The solenoid actuator may include an actuator main body supported by one of the operation member or the transmission member, and a movable portion movable relative to the actuator main body. The movable portion may protrude out from the main body to engage the other of the operation member or the transmission member when the solenoid actuator is demagnetized, the other of the operation member or the transmission member may have a receiving portion that receives the movable portion of the demagnetized solenoid actuator when the operation member is situated at a non-operation position where the operation member is unoperated, and a second receiving portion that receives the demagnetized movable portion when the operation member is situated at a second operation position.
- A railcar according to another aspect of the invention includes the above-described door apparatus, and a car body equipped with the door apparatus.
- A railcar according to another aspect of the invention includes the above-described door apparatus, a car body equipped with the door apparatus, and a speed sensor measuring a speed of the car body. When a measurement result of the speed sensor indicates that the car body is stopped or a detected speed of the car body is at or lower than a predetermined speed, it is determined that the door body is allowed to be opened
- A railcar according to another aspect of the invention includes a door apparatus equipped with the above-described timer; a car body equipped with the door apparatus; and a speed sensor measuring a speed of the car body. When a measurement result of the speed sensor indicates that the car body is stopped or a detected speed of the car body is at or lower than a predetermined speed and when a predetermined time has elapsed after the timer is activated, it is determined that the door body is allowed to be opened
- A method of unlocking a door body according to another aspect of the invention is a method of unlocking a door body of a railcar that is locked by a locking mechanism in a closed state. The method includes operating an operation member to unlock the door body; and when a power supply for the railcar is in a normal state, determining whether the door body is allowed to be opened after the operation member is operated, and unlocking the door body by the locking mechanism only when it is determined that opening of the door body is allowed, when the power supply for the railcar is in an abnormal state, unlocking the door body by the locking mechanism after the operation member is operated without determining whether opening of the door body is allowed.
- In the method of unlocking the door body according to the aspect of the invention, it may be determined that the door body is allowed to be opened when a predetermined time has elapsed after the operation member is operated
- In the method of unlocking the door body, when the car body is stopped or the speed of the car body is at or lower than a predetermined speed, it may be determined that the door body is allowed to be opened
- In the method of unlocking the door body, when the car body is stopped or the speed of the car body is at or lower than a predetermined speed and when a predetermined time has elapsed after the operation member is operated, it may be determined that the door body is allowed to be opened
- A door unlocking device according to another aspect of the invention is a door unlocking device for unlocking a door body of a railcar locked by a locking mechanism in a closed state. The door unlocking device includes: an operation member operated to unlock the door body; a motion detection sensor detecting a movement of the operation member and transmitting an electric signal; a transmission member transmitting the movement of the operation member to the locking mechanism; and a clutch mechanism engaging and disengaging transmission of the movement from the operation member to the transmission member.
- In the door unlocking device, the clutch mechanism disengages transmission of the movement from the operation member to the transmission member when electric power is supplied to the clutch mechanism, and engages transmission of the movement from the operation member to the transmission member when electric power is not supplied to the clutch mechanism.
- In the door unlocking device, the clutch mechanism may include a solenoid actuator.
- In this case, the solenoid actuator includes an actuator main body supported by one of the operation member or the transmission member, and a movable portion movable relative to the actuator main body. The movable portion may protrude out from the main body to engage the other of the operation member or the transmission member when the solenoid actuator is demagnetized
- In this case, the other of the operation member or the transmission member may have a receiving portion that receives the movable portion of the demagnetized solenoid actuator.
- In the door unlocking device, the operation member is movable between a non-operation position where the operation member is situated when the operation member is not operated, and an operation position where the motion detection sensor transmit the electric signal and a second operation position where the door body is allowed to be unlocked by the locking mechanism, and the door unlocking device may further include a holding mechanism that inhibits the operation member from returning to the non-operation position from the operation position or the second operation position after the operation member has been moved to the operation position or the second operation position from the non-operation position.
- In this case, the holding mechanism may be a latch mechanism and allows the operation member to move from the operation position and the second operation position so as to move further away from the non-operation position.
- In this case, the door unlocking device may further include a casing that holds the operation member such that the operation member is movable from the non-operation position to a third operation position via the operation position and the second operation position. The casing may be deformed by contacting the operation member that moves from the second operation position to the third operation position.
- In this case, the casing may have, at a portion where is deformed by contacting the operation member that moves from the second operation position to the third operation position, a strength reduction feature for lowering the strength of the portion.
- In the door unlocking device, the clutch mechanism includes a solenoid actuator, the solenoid actuator includes an actuator main body supported by one of the operation member or the transmission member, and a movable portion movable relative to the actuator main body, and the movable portion protrudes out from the main body to engage the other of the operation member or the transmission member when the solenoid actuator is demagnetized, the other of the operation member or the transmission member has a receiving portion that receives the movable portion of the demagnetized solenoid actuator when the operation member is situated at a non-operation position where the operation member is unoperated, and a second receiving portion that receives the demagnetized movable portion when the operation member is situated at a second operation position.
- A door apparatus according to another aspect of the invention includes the above-described door unlocking device.
- A railcar according to another aspect of the invention includes the above-described door unlocking device.
- According to the aspect of the invention, an operator only has to perform one operation to unlock the door body. Therefore, it is possible to facilitate operator's intuitive grasping of the unlocking operation method of the door body.
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Fig. 1 is a schematic diagram showing a configuration of a railcar according to one embodiment of the invention. -
Fig. 2 is a front view of a door unlocking device shown inFig.1 . -
Fig. 3 is a cross-sectional view of the door unlocking device shown inFig. 2 . -
Fig. 4 is a perspective view of the door unlocking device showing an operation member, a transmission member, and a clutch mechanism in the door unlocking device shown inFig. 2 . -
Fig. 5 is a cross-sectional view of the door unlocking device to illustrate the clutch mechanism. -
Fig. 6 is a plan view of a locking mechanism in an unbcked state. -
Fig. 7 is a plan view of the bcking mechanism in a locked state. -
Fig. 8 is a side view of the locking mechanism in the bcked state. - Embodiments of the invention will now be described with reference to the attached drawings.
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Fig.1 is a block diagram schematically showing an overall configuration of a railcar according to an embodiment of the invention. Referring toFig. 1 , arailcar 10 includes adoor apparatus 20, and acar body 25 to which thedoor apparatus 20 is installed Electric power is supplied to each part of therailcar 10 from apower supply 40 provided in thecar body 25. Thecar body 25 is provided with aspeed sensor 26 for measuring a speed of thecar body 25. - As shown in
Fig. 1 , thedoor apparatus 20 includes a door body (door panel) 50 that can be opened and closed, alocking mechanism 60 that locks thedoor body 50 in a closed state, and adoor unlocking device 200 for unlocking thedoor body 50 of therailcar 10 with thelocking mechanism 60 in an emergency. Thelocking mechanism 60 has a movable member (locking slider) 30 capable of unlocking thedoor body 50 by sliding in a hereunder-described unlocking direction within thelocking mechanism 60, and amotor 35 that drives the lockingslider 30. One end of awire 31 is connected to the lockingslider 30. When electric power is properly supplied from the power supply 40 (hereinafter also referred to as "when the power supply works normally" or "in the normal power supply state"), thedoor unlocking device 200 is configured to drive themotor 35 of thelocking mechanism 60 via a hereunder-describedcontrol unit 210 to slide the lockingslider 30 in the unlocking direction. Whereas when electric power is not properly supplied from the power supply 40 (hereinafter also referred to as "when there is some failure in the power supply" or "in the abnormal power supply state), thedoor unlocking device 200 is configured to pull thewire 31 to slide the lockingslider 30 in the unlocking direction. - The
door apparatus 20 further includes thecontrol unit 210 that controls unlocking of thedoor body 50 when electric power is properly supplied from thepower supply 40. - Hereinafter, the
door unlocking device 200 of the embodiment will be described in detail with reference toFigs. 2 to 5 .Fig. 2 is a front view of thedoor unlocking device 200 when it is not operated, andFig. 3 is a sectional view of thedoor unlocking device 200 along the line III- III shown inFig 2 .Fig. 4 is a perspective view of thedoor unlocking device 200 when it is operatedFig. 5 is a cross-sectional view of the door unlocking device along the line V-V shown inFig. 3 . - As shown in
Fig. 2 andFig. 3 , thedoor unlocking device 200 includes anoperation member 230 that is operated to unlock thedoor body 50 in an emergency, acasing 236 that holds theoperation member 230 such that theoperation member 230 is rotatable. Further, thedoor unlocking device 200 has amotion detection sensor 260 that detects a movement of theoperation member 230, and aholding mechanism 235 that restricts movement of the operatedoperation member 230. Referring toFig. 4 , thedoor unlocking device 200 includes atransmission member 270 that transmits a movement of theoperation member 230 to thelocking mechanism 60, and aclutch mechanism 280 that engages and disengages transmission of the movement from theoperation member 230 to thetransmission member 270. - As shown in
Figs. 2 to 5 , theoperation member 230 is generally a platelike member. Abearing 232 is provided on an end portion of one surface of theoperation member 230. - The
casing 236 has asupport portion 237 rotatably supporting ashaft 233 that passes through the bearing 232 of theoperation member 230. Thecasing 236 holds theoperation member 230 such that the operation member is movable from a non-operation position A situated when the operation member is not operated, to a third operation position D via an operation position B and a second operation position C. To allow an operator to intuitively grasp even in an emergency that he/she should move theoperation member 230 from the non-operation position A to the second operation position C, aportion 238 of thecasing 236 is designed such that it comes into contact with theoperation member 230 when theoperation member 230 is moved to the second operation position C. Theportion 238 is also designed to deform such that it allows theoperation member 230 to be further moved to the third operation position D if necessary. That is, while theoperation member 230 moves from the second operation position C to the third operation position D, theportion 238 is deformed by contacting theoperation member 236. More specifically, theportion 238 of thecasing 236 has anotch 239 as a strength reduction feature for reducing the strength of theportion 238 where is deformed when it contacts theoperation member 236. Other configurations for the strength reduction may be possible such as thinning and formation of a through hole. - When the
operation member 230 is moved to the operation position B, themotion detection sensor 260 is configured to transmit an electric signal. Themotion detection sensor 260 may include a magnetic sensor, for example, and can detect approach of theoperation member 230. - Once the
operation member 230 is moved to the operation position B or the second operation position C from the non-operation position A, theholding mechanism 235 inhibits theoperation member 230 from returning to the non-operation position A from the operation position B or the second operation position C. In the embodiment, theholding mechanism 235 is a latch mechanism and allows theoperation member 230 to move from the operation position B and the second operation position C so as to move further away from the non-operation position A. With such aholding mechanism 235, it is prevented that theoperation member 230 that has been moved to the operation position B or the second operation position C returns to the non-operation position A, and if necessary, theoperation member 230 can be further moved from the operation position B to the second operation position C or from the second operation position C to the third operation position D. - The
clutch mechanism 280 is configured to disengage transmission of the movement from theoperation member 230 to thetransmission member 270 when electric power is properly supplied from thepower supply 40. Whereas when electric power is not properly supplied from thepower supply 40, theclutch mechanism 280 is configured to engage transmission of the movement from theoperation member 230 to thetransmission member 270. - As shown in
Fig. 4 andFig. 5 , theclutch mechanism 280 includes asolenoid actuator 281 that receives electric power from thepower supply 40 and generates a magnetic field therearound Thesolenoid actuator 281 includes an actuatormain body 282 supported by thetransmission member 270 and amovable portion 283 movable relative to the actuatormain body 282. In a state where thesolenoid actuator 281 is excited, themovable portion 283 is accommodated in themain body 282, for example, when electric power is normally supplied from thepower supply 40. Further, in a state where thesolenoid actuator 281 is demagnetized, for example, when electric power supply from thepower supply 40 is abnormal, themovable portion 283 protrudes out from themain body 282 to engage with theoperation member 230. More specifically, theoperation member 230 has a receivingportion 283a that receives the protrudedmovable portion 283 of thedemagnetized solenoid actuator 281. The receivingportion 283a is provided at a position where it can receive the protrudedmovable portion 283 when theoperation member 230 is situated at the non-operation position A. Theoperation member 230 is further provided with asecond receiving portion 283b that receives the protrudedmovable portion 283 so that theoperation member 230 can engage with themovable portion 283 even when theoperation member 230 is moved to the second operation position C. More specifically, thesecond receiving portion 283b is provided at a position where it can receive the protrudedmovable portion 283 when theoperation member 230 is situated at the second operation position C. - In the example shown in
Fig. 3 , although the operation position B and the second operation position C are situated at different positions, but they may be at the same position. That is, the operation position of theoperation member 230 where themotion detection sensor 260 sends an electric signal (the operation position B in the example shown inFig. 3 ) and the operation position where themovable portion 283 of theclutch mechanism 280 is able to engage with thesecond receiving portion 283b (the second operation position C in the example shown inFig. 3 ) may correspond with each other. - The actuator
main body 282 may be supported by theoperation member 230. In this case, the receivingportion 283a and thesecond receiving portion 283b are provided in thetransmission member 270, and themovable portion 283 protruding out from themain body 282 is engaged with thetransmission member 270. - The
transmission member 270 includes apinion 271 and arack 273. When themovable portion 283 of theclutch mechanism 280 is engaged with theoperation member 230, thepinion 271 rotates in conjunction with rotation of theoperation member 230. Therack 273 is configured to move in the vertical direction in accordance with rotation of thepinion 271. A tip portion of therack 273 is coupled to the other end of thewire 31 that is coupled to the lockingslider 30 of thelocking mechanism 60. In this manner, the movement of therack 273 is transmitted to the lockingslider 30 of thelocking mechanism 60 via thewire 31. - Referring again to
Fig. 1 , thecontrol unit 210 will be now described As shown inFig. 1 , thecontrol unit 210 includes adetermination unit 212 that determines whether thedoor body 50 is allowed to be opened, a switch (SW)unit 213 that electrically connects or disconnects themotor 35 of thelocking mechanism 60 to/from thepower supply 40. - When the
door unlocking device 200 is operated while electric power is supplied properly from thepower supply 40, thedetermination unit 212 determines whether thedoor body 50 is allowed to be opened As shown inFig. 1 , thedetermination unit 212 has atimer 215. Thetimer 215 is activated upon receiving an electric signal sent from themotion detection sensor 260. - The
determination unit 212 determines that thedoor body 50 is allowed to be opened only when following first condition and second condition are satisfied The first condition is that a measurement result of the above-describedspeed sensor 26 shows that thecar body 25 is stopped or a detected speed of thecar body 25 is at or lower than a predetermined speed The second condition is that a predetermined time has elapsed since thetimer 215 was activated Alternatively, thedetermination unit 212 may determine that opening of thedoor body 50 is allowed when either one of the first condition and the second condition is satisfied - Moreover, instead of providing the
determination unit 212, a member of a crew may determine whether opening of thedoor body 50 is allowed or not based on thespeed sensor 26, thetimer 215, and other instruments. - The
switch unit 213 is switched so as to supply electric power from thepower supply 40 to themotor 35 only when thedetermination unit 212 determines that opening of thedoor body 50 is allowed Theswitch unit 213 may be operated to be switched by a member of a crew at his/her discretion. - The
locking mechanism 60 according the embodiment will be described in detail with reference toFigs. 6 to 8 .Fig. 6 is a plan view of thelocking mechanism 60 in an unlocked state, andFig. 7 is a plan view of thelocking mechanism 60 in a locked state.Fig. 8 is a side view of thelocking mechanism 60 in the locked state. In the examples shown inFigs. 6 to 8 , thedoor body 50 includes a pair of right and leftdoor panels - As shown in
Fig. 8 , thelocking mechanism 60 is supported by a base 5 that is fixed to thecar body 25 above thedoor body 50. The base 5 extends along the opening and closing direction of thedoor body 50. As shown inFigs. 6 to 8 , thelocking mechanism 60 includes alink mechanism 61 that is deformable between a linear state and a flexion state in a horizontal plane, and alink retaining mechanism 65 that operates within the horizontal plane. Thelink mechanism 61 is formed by coupling threelinks central link 62a is rotatably fixed to the base 5 by acoupling pin 63a. One end of thecentral link 62a is coupled to one end of thelink 62b by acoupling pin 63b. The other end of thecentral link 62a is coupled to one end of thelink 62c by aguide coupling pin 63c. Apin 63d and apin 63e are provided at ends of thelinks links link 62a. - Further, the
locking mechanism 60 has the lockingslider 30 which is a movable member for switching thelocking mechanism 60 between the locked state and the unlocked state. The lockingslider 30 is supported by the base 5 and slidable along the opening and closing direction of thedoor body 50. The lockingslider 30 is configured to slide when it receives a driving force exerted by themotor 35. As shown inFig. 8 , one end of thewire 31 is connected to one end of the lockingslider 30, and the locking slider is able to slide also by a pulling force exerted by thewire 31. - As shown in
Figs, 6 to 8 , thepins link mechanism 61, have ends thereof respectively inserted inguide grooves Figs. 6 and7 ) that are formed linearly in the base 5 in parallel to the sliding direction of the lockingslider 30. In this way, thepins guide grooves pins guide grooves - An end of the
guide coupling pin 63c of thelink mechanism 61 situated closer to the lockingslider 30 is inserted in aslit 30e of thebcking slider 30. Theslit 30e has a first hole α that is formed lineally in parallel to the moving direction of the lockingslider 30, and a second hole β that has a curved shape and is connected to the end portion of the first hole α on the side closer to theguide groove 80B. The first hole α is aligned with theguide grooves slider 30. On the other hand, an end of the second hole β on the side opposite to the side connected to the first hole α is not aligned with the first hole α and theguide grooves slider 30. Theguide connecting pin 63c is configured such that it can be displaced from the first hole α to the second hole β or from the second hole β to the first hole α according to the position of the lockingslider 30. The position of theguide coupling pin 63c is thus restricted by the position of the lockingslider 30. Therefore thecentral link 62a is rotated by the movement of the lockingslider 30 and it is possible to switch between the linear state and the flexion state of thelink mechanism 61. - The
link retaining mechanism 65 includes a pair of engagingmembers link mechanism 61 symmetrically with reference to the link mechanism 61 (with reference to thecoupling pin 63a) such that they are rotatable within the horizontal plane. Thelink retaining mechanism 65 further includes acoupling spring 69 that couples the pair of engaging members to each other. The engagingmembers portions engaging portions Rotation shafts members Fig. 8 ). Abridge member 82 is fixed to the pair ofrotation shafts coupling pin 63a for rotatably fixing thecentral link 62a of thelink mechanism 61 is supported by thebridge member 82. - When no external force exerts on the
link retaining mechanism 65, the engagingmembers coupling spring 69 and are retained in the state as shown inFig. 6 . In this state, the engagingmembers Fig. 6 ), an extending movement of thelink mechanism 61 into the linear state. When thelink mechanism 61 is thus held in the flexion state by the engagingmembers Fig. 6 ) via the slit 33e and theguide coupling pin 63c. - Meanwhile, when edges (portions indicated by P1 in
Fig. 6 ) of the first engagingportions Fig. 6 ) that are respectively fixed to thedoor panels members Fig. 6 ) in which the secondengaging portions link mechanism 61 against the urging force of thecoupling spring 69. In a state where thedoor panels portions Fig. 7 , and the secondengaging portions pins link mechanism 61. That is, the engagingmembers link mechanism 61. If at this point, the lockingslider 30 moves in the locking direction, thelink mechanism 61 is made to transition from the flexion state to the linear state by theguide connecting pin 63c that moves along the slit 33e. Thepins link mechanism 61 then engage with the secondengaging potions members members Fig. 7 ) are thus constrained by the first engagingportions - Next, operation of the
railcar 10 having thedoor apparatus 20 of the embodiment will be described - When an operator tries to open the
door body 50, thedoor body 50 is closed and locked by thelocking mechanism 60. That is, thelink mechanism 61 in thelocking mechanism 60 is in the linear state shown inFig. 7 . Further, theoperation member 230 of thedoor unlocking device 200 is in the non-operation position A shown inFigs. 2 and3 . Theswitch unit 213 is switched to the position where electric power is not supplied to themotor 35 of thelocking mechanism 60 from thepower supply 40. - Firstly described is a case where electric power is properly supplied to the
railcar 10 from thepower supply 40 when an operator begins to operate theoperation member 230. In this case, thesolenoid actuator 281 of theclutch mechanism 280 in thedoor unlocking device 200 is excited by electric power supplied from thepower supply 40. Therefore, themovable portion 283 of theclutch mechanism 280 remains accommodated in themain body 282 and is not engaged with theoperation member 230. Accordingly, even if the operator operates theoperation member 230, the operational movement of theoperation member 230 is not transmitted to thetransmission member 270. - In this state, in order to unlock the
door body 50 that has been locked in the closed state by thelocking mechanism 60, the operator moves theoperation member 230 of thedoor unlocking device 200 from the non-operation position A to the operation position B. When theoperation member 230 is moved, the movement of theoperation member 230 is detected by themotion detection sensor 260. When theoperation member 230 is moved to the operation position B, an electric signal is transmitted by themotion detection sensor 260. - The
operation member 230 that has been moved to the operation position B is held by theholding mechanism 235 of thedoor unlocking device 200. Consequently theoperation member 230 is retained at the operation position B without returning to the non-operation position A. - When the
determination unit 212 receives the electric signal from themotion detection sensor 260, thedetermination unit 212 activates thetimer 215 and determines whether opening of thedoor body 50 is allowed. More specifically, thedetermination unit 212 determines if a measurement result of the above-describedspeed sensor 26 shows that thecar body 25 is stopped or a detected speed of thecar body 25 is at or lower than a predetermined speed (the first condition). Further, thedetermination unit 212 determines if a predetermined time has elapsed after theoperation member 230 is operated, that is, determines if a predetermined time has elapsed since thetimer 215 was activated (the second condition). Thedetermination unit 212 determines that thedoor body 50 is allowed to be opened after confirming that the first condition and the second condition are satisfied Note that thecar body 25 can be moved to a place suitable for a crew to get off the car after thetimer 215 is activated and before the predetermined time elapses. - When the
determination unit 212 determines that thedoor body 50 is allowed to be opened, theswitch unit 213 is switched such that electric power is supplied from thepower supply 40 to themotor 35 of thelocking mechanism 60. When electric power is supplied to themotor 35, the lockingslider 30 receives the driving force of themotor 35 and slides in the unlocking direction. - Here, the determination as to whether opening of the
door body 50 is allowed may be made by a member of a crew based on information obtained from thespeed sensor 26, thetimer 215 and other instruments as described above. In addition, the operation of releasing thelocking mechanism 60, such as switching of theswitch unit 213 may also be carried out manually by a member of a crew. - As the locking
slider 30 is moved in the unlocking direction, theguide connecting pin 63c of the link mechanism moves along the edge of theslit 30e from the first hole α to the second hole β. Thereby thelink mechanism 61 is made a transition from the linear state to the flexion state. Consequently engagements between the secondengaging potions members pins link mechanism 61 are released Then, due to the tensile elastic force of the connectingspring 69 that connects the pair of engagingmembers members portions Fig. 7 to face outward (to face away from the link mechanism 61). The locking pins 55A and 55B that are engaged with the secondengaging portions door panels - Once the door is unlocked, an operator draws the
door panels door body 50. - Next, described is a case where power supply to the
railcar 10 from thepower supply 40 is abnormal when an operator begins to operate theoperation member 230. In this case, thesolenoid actuator 281 of theclutch mechanism 280 is demagnetized since it does not receive the electric power from thepower supply 40. Accordingly, themovable portion 283 protrudes out from themain body 282. Themovable portion 283 that protrudes from themain body 282 is received by a receivingportion 283a of theoperation member 230 and is engaged with theoperation member 230. - In this state, when the operator moves the
operation member 230 from the non-operation position A to the second operation position C, this movement of theoperation member 230 is transmitted to thetransmission member 270 via theclutch mechanism 280. Thepinion 271 of thetransmission member 270 rotates in accordance with the movement of theoperation member 230 to move therack 273 in the downward direction. Consequently, thewire 31 whose other end is connected to the tip of therack 273 is pulled downward - When the
wire 31 is pulled downward, the lockingslider 30 of thelocking mechanism 60 slides in the unlocking direction by the pulling force of thewire 31. As a result, thedoor body 50 is unlocked by thelocking mechanism 60. - Described next is a case where some failure occurs in the
power supply 40 of therailcar 10 after an operator begins to operate theoperation member 230, more specifically, during the operator moves theoperation member 230 from the non-operation position A to the second operation position C, or after the operator moved the operation member to the second operation position C. - In this case, due to occurrence of a failure in the
power supply 40, thesolenoid actuator 281 of theclutch mechanism 280 shifts from the excited state to the demagnetized state. Therefore themovable portion 283 accommodated in the main body moves relative to themain body 282 and protrudes out from themain body 282. When theoperation member 230 is moved to the second operation position C (if theoperation member 230 has been moved to the second operation position C, at the second operation position C), themovable portion 283 that protrudes out from themain body 282 is received by thesecond receiving portion 283b of theoperation member 230, and engaged with theoperation member 230. - In this state, when the operator further moves the
operation member 230 to the third operation position D, this movement of theoperation member 230 is transmitted to thetransmission member 270 via theclutch mechanism 280. Consequently, thewire 31 that is connected to therack 273 of theclutch mechanism 280 is pulled downward. The lockingslider 30 of thelocking mechanism 60 slides in the unlocking direction when thewire 31 is pulled downward, and thedoor body 50 is unlocked by thelocking mechanism 60. The displacement of theoperation member 230 from the second operation position C to the third operation position D is not hindered because theportion 238 provided with the strength reduction feature of thecasing 236 deforms when theoperation member 230 comes into contact with theportion 238. - As for the
door apparatus 20 used for therailcar 10 according to the embodiment, thedoor apparatus 20 includes thedoor body 50 that can be opened and closed, thelocking mechanism 60 for locking thedoor body 50 in a closed state, and theoperation member 230 that is operated to unlock thedoor body 50. When thepower supply 40 of therailcar 10 is normal, it is determined whether thedoor body 50 is allowed to be opened by operating theoperation member 230. Thedoor body 50 is unlocked by thelocking mechanism 60 only when it is determined that opening of thedoor body 50 is allowed Whereas when thepower supply 40 of therailcar 10 is in an abnormal state, thedoor body 50 is unlocked by thelocking mechanism 60 by operating theoperation member 230. - According to the above-described
door apparatus 20, an operator has to perform only one movement to unlock thedoor body 50 in an emergency. Therefore, it is possible to facilitate operator's intuitive grasping of the unlocking operation method of thedoor body 50. Further, the operation object and the operation method are the same between the normal power supply state and the abnormal power supply state. Therefore, it is possible to prompt an operator to try one operation method that is intuitively grasped from theoperation member 230 to unlock thedoor body 50. - Moreover, the
door apparatus 20 further includes thetimer 215 that is activated after theoperation member 230 is operated When a predetermined time has elapsed after thetimer 215 is activated, it is determined that thedoor body 50 is allowed to be opened According to thedoor apparatus 20, after theoperation member 230 is operated and before thedoor body 50 is unlocked by thelocking mechanism 60, the speed of thecar body 25 can be sufficiently reduced or thecar body 25 can be moved to a place suitable for letting passengers and a crew get off. Therefore, it is possible to secure the safety of the crew of therailcar 10. - Moreover, the
door apparatus 20 further includes amotion detection sensor 260 detecting a movement of theoperation member 230 and transmitting an electric signal; atransmission member 270 transmitting the movement of theoperation member 230 to thelocking mechanism 60; and aclutch mechanism 280 engaging and disengaging transmission of the movement from theoperation member 230 to thetransmission member 270. According to the above-describeddoor apparatus 20, an operator has to perform only one movement to unlock thedoor body 50 in an emergency. Therefore, it is possible to facilitate operator's intuitive grasping of the unlocking operation method of thedoor body 50. Further, it is possible to make the operation object and the operation method same between the normal power supply state and the abnormal power supply state. Therefore, it is possible to prompt an operator to try one operation method that is intuitively grasped from theoperation member 230 to unlock thedoor body 50. - More specifically, the
clutch mechanism 280 disengages transmission of the movement from theoperation member 230 to thetransmission member 270 when electric power is supplied to the clutch 280, and engages transmission of the movement from theoperation member 230 to thetransmission member 270 when electric power is not supplied to the clutch 280. According to thisdoor apparatus 20, it is easy to make the operation object and the operation method same between the normal power supply state and the abnormal power supply state. Therefore, it is possible to prompt an operator to try one operation method that is intuitively grasped from theoperation member 230 to unlock thedoor body 50. - More specifically the
clutch mechanism 280 includes thesolenoid actuator 281. Thesolenoid actuator 281 includes the actuatormain body 282 supported by one of theoperation member 230 or thetransmission member 270, and themovable portion 283 movable relative to the actuatormain body 282. Themovable portion 283 protrudes out from themain body 282 to engage the other of theoperation member 230 or thetransmission member 270 when thesolenoid actuator 281 is demagnetized The other of theoperation member 230 or thetransmission member 270 has the receivingportion 283a that receives themovable portion 283 of thedemagnetized solenoid actuator 281. - In the
door apparatus 20, theoperation member 230 is movable between the non-operation position A where theoperation member 230 is situated when theoperation member 230 is not operated, and the operation position B where themotion detection sensor 260 transmits the electric signal and the second operation position C where thedoor body 50 is allowed to be unlocked by thelocking mechanism 60. Thedoor apparatus 20 further includes theholding mechanism 235 that inhibits theoperation member 230 from returning to the non-operation position A from the operation position B or the second operation position C after theoperation member 230 has been moved to the operation position B or the second operation position C from the non-operation position A. According to thisdoor apparatus 20, it is possible to prevent theoperation member 230 from returning to the non-operation position A after theoperation member 230 has been moved to the operation position B so that insufficient transmission of the electric signal by themotion detection sensor 260 is prevented Moreover, it is possible to prevent theoperation member 230 from returning to the non-operation position A after theoperation member 230 has been moved to the second operation position C so that it is possible to prevent that thedoor body 50 is unintentionally locked again. - More specifically, the
holding mechanism 235 is a latch mechanism and allows theoperation member 230 to move from the operation position B and the second operation position C so as to move further away from the non-operating position A. According to thisdoor apparatus 20, it is possible to further move theoperation member 230 that is situated at the operation position B or the second operation position C to move away from the non-operation position A. In this way, it is possible to secure an operation amount of theoperation member 230 necessary for unlocking thedoor body 50 by thelocking mechanism 60 in preparation for occurrence of a failure of the power supply during operation of theoperation member 230. - The
door apparatus 20 may further include thecasing 236 that holds theoperation member 230 such that theoperation member 230 is movable from the non-operation position A to the third operation position D via the operation position B and the second operation position C. Thecasing 236 is deformed by contacting theoperation member 230 that moves from the second operation position C to the third operation position D. According to thisdoor apparatus 20, an operator is able to intuitively grasp even in an emergency that he/she should move theoperation member 230 from the non-operation position A to the operation position B, and moreover it is possible for the operator to stably operate theoperation member 230 from the non-operation position A to the operation position B. - More specifically, the
casing 236 has, at aportion 238 where is deformed by contacting theoperation member 230 that moves from the second operation position C to the third operation position D, thestrength reduction feature 239 for lowering the strength of theportion 238. - Further in the
door apparatus 20, theclutch mechanism 280 includes thesolenoid actuator 281. Thesolenoid actuator 281 includes the actuatormain body 282 supported by one of theoperation member 230 or thetransmission member 270, and themovable portion 283 movable relative to the actuatormain body 282. Themovable portion 283 protrudes out from themain body 282 to engage the other of theoperation member 230 or thetransmission member 270 when thesolenoid actuator 281 is demagnetized. The other of theoperation member 230 or thetransmission member 270 has a receivingportion 283a that receives themovable portion 283 of thedemagnetized solenoid actuator 281 when theoperation member 230 is situated at a non-operation position A where theoperation member 230 is unoperated, and thesecond receiving portion 283b that receives themovable portion 283 of thedemagnetized solenoid actuator 281 when theoperation member 230 is situated at the second operation position C. - According to this
door apparatus 20, it is easy to make the operation object and the operation method same between the normal power supply state and the abnormal power supply state. Due to the presence of the receivingportions member 230 is started, themovable portion 283 of theclutch mechanism 280 is engaged with theoperation member 230 or thetransmission member 270 to allow thedoor body 50 to be unlocked by thelocking mechanism 60. - The
railcar 10 according to an embodiment includes the above-describeddoor apparatus 20, and thecar body 25 equipped with thedoor apparatus 20. - According to the above-described
railcar 10, an operator only has to perform one movement to unlock thedoor body 50 in an emergency. Therefore, it is possible to facilitate operator's intuitive grasping of the unlocking operation method of thedoor body 50. Further, the operation object and the operation method are the same between the normal power supply state and the abnormal power supply state. Therefore, it is possible to prompt an operator to try one operation method that is intuitively grasped from theoperation member 230 to unlock thedoor body 50. - The
railcar 10 according to an embodiment includes the above-describeddoor apparatus 20, thecar body 25 equipped with thedoor apparatus 20, and thespeed sensor 26 that measures the speed of thecar body 25. When a measurement result of thespeed sensor 26 indicates that thecar body 25 is stopped or a detected speed of thecar body 25 is at or lower than a predetermined speed, it is determined that thedoor body 50 is allowed to be opened - According to the
railcar 10 as described above, thedoor body 50 is unlocked after thecar body 25 is stopped or after the speed of thecar body 25 is sufficiently reduced Therefore, it is possible to secure the safety of the crew of therailcar 10. - The
railcar 10 according to an embodiment includes the above-describeddoor apparatus 20 equipped with thetimer 215, thecar body 25 equipped with thedoor apparatus 20, and thespeed sensor 26 that measures the speed of thecar body 25. When a measurement result of thespeed sensor 26 indicates that thecar body 25 is stopped or a detected speed of thecar body 25 is at or lower than a predetermined speed and when a predetermined time has elapsed after thetimer 215 is activated, it is determined that thedoor body 50 is allowed to be opened - According to the
railcar 10 as described above, thedoor body 50 is unlocked after thecar body 25 is stopped or after the speed of thecar body 25 is sufficiently reduced Further, after theoperation member 230 is operated and before thedoor body 50 is unlocked by thelocking mechanism 60, it is possible to move thecar body 25 to a place suitable for letting people getting off from the car. Therefore, it is possible to secure the safety of the crew of therailcar 10. - A method of unlocking the
door body 50 of therailcar 10 locked by the locking mechanism in a closed state according to an embodiment includes: operating theoperation member 230 to unlock thedoor body 50; and when the power supply for therailcar 10 is in a normal state, determining whether thedoor body 50 is allowed to be opened after theoperation member 230 is operated, and unlocking thedoor body 50 by thelocking mechanism 60 only when it is determined that opening of thedoor body 50 is allowed and when thepower supply 40 for therailcar 10 is in an abnormal state, unlocking thedoor body 50 by thelocking mechanism 60 after theoperation member 230 is operated without determining whether opening of thedoor body 50 is allowed - According to this unlocking method, an operator only has to perform one operation to unlock the
door body 50 in an emergency. Therefore, it is possible to facilitate operator's intuitive grasping of the unlocking operation method of thedoor body 50. Further, the operation object and the operation method are the same between the normal power supply state and the abnormal power supply state. Therefore, it is possible to prompt an operator to try one operation method that is intuitively grasped from theoperation member 230 to unlock thedoor body 50. - In addition, in the above-described unlocking method, it is determined that the
door body 50 is allowed to be opened when a predetermined time has elapsed after theoperation member 230 is operated According to this unlocking method after theoperation member 230 is operated and before thedoor body 50 is unlocked by thelocking mechanism 60, the speed of thecar body 25 can be sufficiently reduced or thecar body 25 can be moved to a place suitable for letting passengers and a crew get off. Therefore, it is possible to secure the safety of the crew of therailcar 10. - In the above described unlocking method, when the
car body 25 is stopped or the speed of thecar body 25 is at or lower than a predetermined speed, it is determined that thedoor body 50 is allowed to be opened According to the unlocking method, thedoor body 50 is unlocked after thecar body 25 is stopped or after the speed of thecar body 25 is sufficiently reduced Therefore, it is possible to secure the safety of the crew of therailcar 10. - In the above described unbcking method, when the
car body 25 is stopped or the speed of thecar body 25 is at or lower than a predetermined speed and when a predetermined time has elapsed after theoperation member 230 is operated, it is determined that thedoor body 50 is allowed to be opened According to the unlocking method, thedoor body 50 is unlocked after thecar body 25 is stopped or after the speed of thecar body 25 is sufficiently reduced. Further, after theoperation member 230 is operated and before thedoor body 50 is unlocked by thelocking mechanism 60, it is possible to move thecar body 25 to a place suitable for letting people getting off from the car. Therefore, it is possible to secure the safety of the crew of therailcar 10. - The
door unlocking device 200 according to an embodiment for unlocking thedoor body 50 of therailcar 10 locked by thelocking mechanism 60 in a closed state, includes theoperation member 230 operated to unlock thedoor body 50, themotion detection sensor 260 that detects a movement of theoperation member 230 and transmits an electric signal, thetransmission member 270 that transmits the movement of theoperation member 230 to thelocking mechanism 60, and theclutch mechanism 280 that engages and disengages transmission of the movement from theoperation member 230 to thetransmission member 270. - According to the above-described
door unlocking device 200, an operator has to perform only one movement to unlock thedoor body 50 in an emergency. Therefore, it is possible to facilitate operator's intuitive grasping of the unlocking operation method of thedoor body 50. Further, it is possible to make the operation object and the operation method same between the normal power supply state and the abnormal power supply state. Therefore, it is possible to prompt an operator to try one operation method that is intuitively grasped from theoperation member 230 to unlock thedoor body 50. - More specifically, the
clutch mechanism 280 disengages transmission of the movement from theoperation member 230 to thetransmission member 270 when electric power is supplied to the clutch, and engages transmission of the movement from theoperation member 230 to thetransmission member 270 when electric power is not supplied to the clutch. According to thisdoor unlocking device 200, it is easy to make the operation object and the operation method same between the normal power supply state and the abnormal power supply state. Therefore, it is possible to prompt an operator to try one operation method that is intuitively grasped from theoperation member 230 to unlock thedoor body 50. - More specifically the
clutch mechanism 280 includes thesolenoid actuator 281. Thesolenoid actuator 281 includes the actuatormain body 282 supported by one of theoperation member 230 or thetransmission member 270, and themovable portion 283 movable relative to the actuatormain body 282. Themovable portion 283 protrudes out from themain body 282 to engage the other of theoperation member 230 or thetransmission member 270 when thesolenoid actuator 281 is demagnetized The other of theoperation member 230 or thetransmission member 270 has the receivingportion 283a that receives themovable portion 283 of thedemagnetized solenoid actuator 281. - In the
door unlocking device 200, theoperation member 230 is movable between the non-operation position A where theoperation member 230 is situated when theoperation member 230 is not operated, and the operation position B where themotion detection sensor 260 transmit the electric signal and the second operation position C where thedoor body 50 is allowed to be unlocked by thelocking mechanism 60. Thedoor unlocking device 200 further includes theholding mechanism 235 that inhibits theoperation member 230 from returning to the non-operation position A from the operation position B or the second operation position C after theoperation member 230 has been moved to the operation position B or the second operation position C from the non-operation position A. According to thisdoor unlocking device 200, it is possible to prevent theoperation member 230 from returning to the non-operation position A after theoperation member 230 has been moved to the operation position B so that insufficient transmission of the electric signal by themotion detection sensor 260 is prevented Moreover, it is possible to prevent theoperation member 230 from returning to the non-operation position A after theoperation member 230 has been moved to the second operation position C so that it is possible to prevent that thedoor body 50 is unintentionally locked again. - More specifically, the
holding mechanism 235 is a latch mechanism and allows theoperation member 230 to move from the operation position B and the second operation position C so as to move further away from the non-operating position A. According to thisdoor unlocking device 200, it is possible to further move theoperation member 230 that is situated at the operation position B or the second operation position C to move away from the non-operation position A. In this way, it is possible to secure an operation amount of theoperation member 230 necessary for unlocking thedoor body 50 by thelocking mechanism 60 in preparation for occurrence of a failure of the power supply during operation of theoperation member 230. - The
door unlocking device 200 may further include thecasing 236 that holds theoperation member 230 such that theoperation member 230 is movable from the non-operation position A to the third operation position D via the operation position B and the second operation position C. Thecasing 236 is deformed by contacting theoperation member 230 that moves from the second operation position C to the third operation position D. According to thisdoor unlocking device 200, an operator is able to intuitively grasp even in an emergency that he/she should move theoperation member 230 from the non-operation position A to the operation position B, and moreover it is possible for the operator to stably operate theoperation member 230 from the non-operation position A to the operation position B. - More specifically, the
casing 236 has, at aportion 238 where is deformed by contacting theoperation member 230 that moves from the second operation position C to the third operation position D, thestrength reduction feature 239 for lowering the strength of theportion 238. - Further in the
door unlocking device 200, theclutch mechanism 280 includes thesolenoid actuator 281. Thesolenoid actuator 281 includes the actuatormain body 282 supported by one of theoperation member 230 or thetransmission member 270, and themovable portion 283 movable relative to the actuatormain body 282. Themovable portion 283 protrudes out from themain body 282 to engage the other of theoperation member 230 or thetransmission member 270 when thesolenoid actuator 281 is demagnetized. The other of theoperation member 230 or thetransmission member 270 has a receivingportion 283a that receives themovable portion 283 of thedemagnetized solenoid actuator 281 when theoperation member 230 is situated at a non-operation position A where theoperation member 230 is unoperated, and thesecond receiving portion 283b that receives themovable portion 283 of thedemagnetized solenoid actuator 281 when theoperation member 230 is situated at the second operation position C. - According to this
door unlocking device 200, it is easy to make the operation object and the operation method same between the normal power supply state and the abnormal power supply state. Due to the presence of the receivingportions member 230 is started, themovable portion 283 of theclutch mechanism 280 is engaged with theoperation member 230 or thetransmission member 270 to allow thedoor body 50 to be unlocked by thelocking mechanism 60. - The
door apparatus 20 according to an embodiment includes the above-describeddoor unlocking device 200. According to thisdoor apparatus 20, an operator has to perform only one movement to unlock thedoor body 50 in an emergency. Therefore, it is possible to facilitate operator's intuitive grasping of the unlocking operation method of thedoor body 50. Further, it is possible to make the operation object and the operation method same between the normal power supply state and the abnormal power supply state. Therefore, it is possible to prompt an operator to try one operation method that is intuitively grasped from theoperation member 230 to unlock thedoor body 50. - The
railcar 10 according to an embodiment include the above-describeddoor unlocking device 200. According to thisdoor apparatus 20, an operator has to perform only one movement to unlock thedoor body 50 in an emergency. Therefore, it is possible to facilitate operator's intuitive grasping of the unlocking operation method of thedoor body 50. Further, it is possible to make the operation object and the operation method same between the normal power supply state and the abnormal power supply state. Therefore, it is possible to prompt an operator to try one operation method that is intuitively grasped from theoperation member 230 to unlock thedoor body 50. - The embodiments described herein represent a number of possible examples and is not intended to limit the scope of the invention. The foregoing embodiments may be implemented in various other ways and various omissions, replacements and modifications can be made to the embodiments without departing from the spirit of the invention. The embodiments and any such modifications are intended to be included within the spirit and scope of the invention and included in the scope of the invention defined by the following claims and equivalents thereof.
Claims (15)
- A door apparatus [20] used for a railcar (10), comprising:a door body (50) that is openable and closable;a locking mechanism (60) locking the door body (50) in a closed state; andan operation member (230) operated to unlock the door body (50),wherein when a power supply (40) for the railcar (10) is in a normal state, it is determined whether the door body (50) is allowed to be opened by operating the operation member (230), and the door body (50) is unlocked by the locking mechanism (60) only when it is determined that opening of the door body (50) is allowed, andwhen the power supply (40) for the railcar (10) is in an abnormal state, the door body (50) is unlocked by the locking mechanism (60) by operating the operation member (230).
- The door apparatus (20) according to claim 1, further comprising:a timer (215) activated after the operation member (230) is operated,wherein when a predetermined time has elapsed after the timer (215) is activated, it is determined that the door body (50) is allowed to be opened
- The door apparatus (20) according to claim 1 or 2, further comprising:a motion detection sensor (260) detecting a movement of the operation member (230) and transmitting an electric signal;a transmission member (270) transmitting the movement of the operation member (230) to the locking mechanism (60); anda clutch mechanism (280) engaging and disengaging transmission of the movement from the operation member (230) to the transmission member (270).
- The door apparatus (20) according to claim 3, wherein the clutch mechanism (280) disengages transmission of the movement from the operation member (230) to the transmission member (270) when electric power is supplied to the clutch mechanism (280), and engages transmission of the movement from the operation member (230) to the transmission member (270) when electric power is not supplied to the clutch mechanism (280).
- The door apparatus (20) according to claim 3 or 4, wherein
the clutch mechanism (280) includes a solenoid actuator (281). - The door apparatus (20) according to claim 5, wherein
the solenoid actuator (281) includes an actuator main body (282) supported by one of the operation member (230) or the transmission member (270), and a movable portion (283) movable relative to the actuator main body (282), and
the movable portion (283) protrudes out from the main body (282) to engage the other of the operation member (230) or the transmission member (270) when the solenoid actuator (281) is demagnetized - The door apparatus (20) according to claim 6, wherein the other of the operation member (230) or the transmission member (270) has a receiving portion (283a) that receives the movable portion (283) of the demagnetized solenoid actuator (281).
- The door apparatus (20) according to any one of the preceding claims, wherein
the operation member (230) is movable between a non-operation position (A) where the operation member (230) is situated when the operation member (230) is not operated, and an operation position (B) where the motion detection sensor (260) transmits the electric signal and a second operation position (C) where the door body (50) is allowed to be unlocked by the locking mechanism (60), and
the door apparatus (20) further includes a holding mechanism (235) that inhibits the operation member (230) from returning to the non-operation position (A) from the operation position (B) or the second operation position (C) after the operation member (230) has been moved to the operation position (B) or the second operation position (C) from the non-operation position (A). - The door apparatus (20) according to claim 8, wherein the holding mechanism (235) is a latch mechanism and allows the operation member (230) to move from the operation position (B) and the second operation position (C) so as to move further away from the non-operation position (A).
- The door apparatus (20) according to claim 9, further comprising:a casing (236) that holds the operation member (230) such that the operation member (230) is movable from the non-operation position (A) to a third operation position (D) via the operation position (B) and the second operation position (C),wherein the casing (236) is deformed by contacting the operation member (230) that moves from the second operation position (C) to the third operation position (D).
- The door apparatus (20) according to claim 10, wherein the casing (236) has, at a portion where is deformed by contacting the operation member (230) that moves from the second operation position (C) to the third operation position (D), a strength reduction feature (239) for reducing the strength of the portion.
- The door apparatus (20) according to any one of claims 6 to 11, wherein
the clutch mechanism (280) includes a solenoid actuator (281),
the solenoid actuator (281) includes an actuator main body (282) supported by one of the operation member (230) or the transmission member (270), and a movable portion (283) movable relative to the actuator main body (282), and
the movable portion (283) protrudes out from the main body (282) to engage the other of the operation member (230) or the transmission member (270) when the solenoid actuator (281) is demagnetized,
the other of the operation member (230) or the transmission member (270) has a receiving portion (283a) that receives the movable portion (283) of the demagnetized solenoid actuator (281) when the operation member (230) is situated at a non-operation position (A) where the operation member (230) is unoperated, and a second receiving portion (283b) that receives the demagnetized movable portion (283) when the operation member (230) is situated at a second operation position (C). - A railcar (10) comprising:the door apparatus (20) according to any one of claims 1 to 12: anda car body (25) equipped with the door apparatus (20).
- A railcar (10) comprising:the door apparatus (20) according to any one of claims 1 to 12;a car body (25) equipped with the door apparatus (20); anda speed sensor (26) measuring a speed of the car body (25),wherein when a measurement result of the speed sensor (25) indicates that the car body (25) is stopped or a detected speed of the car body (25) is at or lower than a predetermined speed, it is determined that the door body (50) is allowed to be opened
- A railcar (10) comprising:the door apparatus (20) according to claim 2;a car body (25) equipped with the door apparatus (20); anda speed sensor (26) measuring a speed of the car body (25),wherein when a measurement result of the speed sensor (26) indicates that the car body (25) is stopped or a detected speed of the car body (25) is at or lower than a predetermined speed and when a predetermined time has elapsed after the timer (215) is activated, it is determined that the door body (50) is allowed to be opened.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017027029A JP6845709B2 (en) | 2017-02-16 | 2017-02-16 | A method of unlocking a door device for a railroad vehicle, a railroad vehicle equipped with a door device for a railroad vehicle, an emergency door unlocking device, and a door body locked by a lock mechanism. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3369639A1 true EP3369639A1 (en) | 2018-09-05 |
EP3369639B1 EP3369639B1 (en) | 2024-01-31 |
Family
ID=61832240
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18157103.5A Active EP3369639B1 (en) | 2017-02-16 | 2018-02-16 | Railcar door apparatus and the railcar equipped therewith |
Country Status (3)
Country | Link |
---|---|
US (1) | US20180230721A1 (en) |
EP (1) | EP3369639B1 (en) |
JP (1) | JP6845709B2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109594867A (en) * | 2018-12-18 | 2019-04-09 | 南京康尼机电股份有限公司 | A kind of urgent unlocking of vehicle door system device |
CN111335755B (en) * | 2020-02-27 | 2021-08-17 | 中车株洲电力机车有限公司 | Vehicle door emergency unlocking control method and vehicle door system |
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US4882876A (en) * | 1988-06-21 | 1989-11-28 | Vapor Corporation | Door operator with locking mechanism |
FR2826327A1 (en) * | 2001-05-31 | 2002-12-27 | Fuji Electric Co Ltd | Door device for electric train/tram, uses stopper mechanism to stop latch in half-locking state to make door movable by fixed distance manually between two successive stages of locking |
US20030106458A1 (en) * | 2001-12-12 | 2003-06-12 | Akio Inage | Side sliding door apparatus for electric railcar |
US20030106457A1 (en) * | 2001-12-12 | 2003-06-12 | Akio Inage | Side sliding door apparatus for electric railcar |
US20100188177A1 (en) * | 2009-01-27 | 2010-07-29 | Fuji Electric Systems Co., Ltd. | Sliding door opening/closing device for vehicle |
US20110308164A1 (en) * | 2010-05-28 | 2011-12-22 | Fuji Electric Co., Ltd. | Side sliding door apparatus for vehicle |
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JP3517193B2 (en) * | 2000-09-12 | 2004-04-05 | 株式会社ナブコ | Sliding door locking device |
US6662501B2 (en) * | 2001-05-07 | 2003-12-16 | Westinghouse Air Brake Technologies Corporation | Emergency release mechanism for electrical bus door |
JP2003097124A (en) * | 2001-09-27 | 2003-04-03 | Nabco Ltd | Locking device for vehicle door |
FR2835867B1 (en) * | 2002-02-12 | 2004-08-20 | Meritor Light Vehicle Sys Ltd | MOTOR VEHICLE LOCK |
JP4276888B2 (en) * | 2003-05-07 | 2009-06-10 | 川崎重工業株式会社 | Operation method and operation procedure of emergency exit device and its mechanism |
JP4526274B2 (en) * | 2004-02-02 | 2010-08-18 | 東急車輛製造株式会社 | Emergency equipment container |
JP4184412B1 (en) * | 2007-06-22 | 2008-11-19 | 日本車輌製造株式会社 | Inspection lid open / close control system |
KR101186937B1 (en) * | 2010-05-17 | 2012-09-28 | 흥일기업주식회사 | A Railway vehicle emergency cancellation systems |
PT2495381E (en) * | 2011-03-03 | 2014-10-13 | Alte Technologies S L U | A system and method for locking and unlocking a door of a toilet module of a public transport vehicle |
-
2017
- 2017-02-16 JP JP2017027029A patent/JP6845709B2/en active Active
-
2018
- 2018-02-15 US US15/897,599 patent/US20180230721A1/en not_active Abandoned
- 2018-02-16 EP EP18157103.5A patent/EP3369639B1/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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US4882876A (en) * | 1988-06-21 | 1989-11-28 | Vapor Corporation | Door operator with locking mechanism |
FR2826327A1 (en) * | 2001-05-31 | 2002-12-27 | Fuji Electric Co Ltd | Door device for electric train/tram, uses stopper mechanism to stop latch in half-locking state to make door movable by fixed distance manually between two successive stages of locking |
US20030106458A1 (en) * | 2001-12-12 | 2003-06-12 | Akio Inage | Side sliding door apparatus for electric railcar |
US20030106457A1 (en) * | 2001-12-12 | 2003-06-12 | Akio Inage | Side sliding door apparatus for electric railcar |
US20100188177A1 (en) * | 2009-01-27 | 2010-07-29 | Fuji Electric Systems Co., Ltd. | Sliding door opening/closing device for vehicle |
US20110308164A1 (en) * | 2010-05-28 | 2011-12-22 | Fuji Electric Co., Ltd. | Side sliding door apparatus for vehicle |
Also Published As
Publication number | Publication date |
---|---|
US20180230721A1 (en) | 2018-08-16 |
JP2018131096A (en) | 2018-08-23 |
JP6845709B2 (en) | 2021-03-24 |
EP3369639B1 (en) | 2024-01-31 |
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